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Copyright 2010-2023 Mike Bostock
Permission to use, copy, modify, and/or distribute this software for any purpose
with or without fee is hereby granted, provided that the above copyright notice
and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
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# License information
## Contribution License Agreement
If you contribute code to this project, you are implicitly allowing your code
to be distributed under the MIT license. You are also implicitly verifying that
all code is your original work. `</legalese>`
## Marked
Copyright (c) 2018+, MarkedJS (https://github.com/markedjs/)
Copyright (c) 2011-2018, Christopher Jeffrey (https://github.com/chjj/)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
## Markdown
Copyright © 2004, John Gruber
http://daringfireball.net/
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name “Markdown” nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
This software is provided by the copyright holders and contributors “as is” and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the copyright owner or contributors be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.
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DOMPurify
Copyright 2024 Dr.-Ing. Mario Heiderich, Cure53
DOMPurify is free software; you can redistribute it and/or modify it under the
terms of either:
a) the Apache License Version 2.0, or
b) the Mozilla Public License Version 2.0
-----------------------------------------------------------------------------
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
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the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
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except as required for reasonable and customary use in describing the
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
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Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
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defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
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Licensed under the Apache License, Version 2.0 (the "License");
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-----------------------------------------------------------------------------
Mozilla Public License, version 2.0
1. Definitions
1.1. “Contributor”
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. “Contributor Version”
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributors Contribution.
1.3. “Contribution”
means Covered Software of a particular Contributor.
1.4. “Covered Software”
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. “Incompatible With Secondary Licenses”
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of version
1.1 or earlier of the License, but not also under the terms of a
Secondary License.
1.6. “Executable Form”
means any form of the work other than Source Code Form.
1.7. “Larger Work”
means a work that combines Covered Software with other material, in a separate
file or files, that is not Covered Software.
1.8. “License”
means this document.
1.9. “Licensable”
means having the right to grant, to the maximum extent possible, whether at the
time of the initial grant or subsequently, any and all of the rights conveyed by
this License.
1.10. “Modifications”
means any of the following:
a. any file in Source Code Form that results from an addition to, deletion
from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. “Patent Claims” of a Contributor
means any patent claim(s), including without limitation, method, process,
and apparatus claims, in any patent Licensable by such Contributor that
would be infringed, but for the grant of the License, by the making,
using, selling, offering for sale, having made, import, or transfer of
either its Contributions or its Contributor Version.
1.12. “Secondary License”
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. “Source Code Form”
means the form of the work preferred for making modifications.
1.14. “You” (or “Your”)
means an individual or a legal entity exercising rights under this
License. For legal entities, “You” includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, “control” means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or as
part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its Contributions
or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution become
effective for each Contribution on the date the Contributor first distributes
such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under this
License. No additional rights or licenses will be implied from the distribution
or licensing of Covered Software under this License. Notwithstanding Section
2.1(b) above, no patent license is granted by a Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third partys
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of its
Contributions.
This License does not grant any rights in the trademarks, service marks, or
logos of any Contributor (except as may be necessary to comply with the
notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this License
(see Section 10.2) or under the terms of a Secondary License (if permitted
under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its Contributions
are its original creation(s) or it has sufficient rights to grant the
rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under applicable
copyright doctrines of fair use, fair dealing, or other equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under the
terms of this License. You must inform recipients that the Source Code Form
of the Covered Software is governed by the terms of this License, and how
they can obtain a copy of this License. You may not attempt to alter or
restrict the recipients rights in the Source Code Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this License,
or sublicense it under different terms, provided that the license for
the Executable Form does not attempt to limit or alter the recipients
rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for the
Covered Software. If the Larger Work is a combination of Covered Software
with a work governed by one or more Secondary Licenses, and the Covered
Software is not Incompatible With Secondary Licenses, this License permits
You to additionally distribute such Covered Software under the terms of
such Secondary License(s), so that the recipient of the Larger Work may, at
their option, further distribute the Covered Software under the terms of
either this License or such Secondary License(s).
3.4. Notices
You may not remove or alter the substance of any license notices (including
copyright notices, patent notices, disclaimers of warranty, or limitations
of liability) contained within the Source Code Form of the Covered
Software, except that You may alter any license notices to the extent
required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on behalf
of any Contributor. You must make it absolutely clear that any such
warranty, support, indemnity, or liability obligation is offered by You
alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute, judicial
order, or regulation then You must: (a) comply with the terms of this License
to the maximum extent possible; and (b) describe the limitations and the code
they affect. Such description must be placed in a text file included with all
distributions of the Covered Software under this License. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing basis,
if such Contributor fails to notify You of the non-compliance by some
reasonable means prior to 60 days after You have come back into compliance.
Moreover, Your grants from a particular Contributor are reinstated on an
ongoing basis if such Contributor notifies You of the non-compliance by
some reasonable means, this is the first time You have received notice of
non-compliance with this License from such Contributor, and You become
compliant prior to 30 days after Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions, counter-claims,
and cross-claims) alleging that a Contributor Version directly or
indirectly infringes any patent, then the rights granted to You by any and
all Contributors for the Covered Software under Section 2.1 of this License
shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an “as is” basis, without
warranty of any kind, either expressed, implied, or statutory, including,
without limitation, warranties that the Covered Software is free of defects,
merchantable, fit for a particular purpose or non-infringing. The entire
risk as to the quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You (not any
Contributor) assume the cost of any necessary servicing, repair, or
correction. This disclaimer of warranty constitutes an essential part of this
License. No use of any Covered Software is authorized under this License
except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from such
partys negligence to the extent applicable law prohibits such limitation.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so this exclusion and limitation may not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts of
a jurisdiction where the defendant maintains its principal place of business
and such litigation shall be governed by laws of that jurisdiction, without
reference to its conflict-of-law provisions. Nothing in this Section shall
prevent a partys ability to bring cross-claims or counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject matter
hereof. If any provision of this License is held to be unenforceable, such
provision shall be reformed only to the extent necessary to make it
enforceable. Any law or regulation which provides that the language of a
contract shall be construed against the drafter shall not be used to construe
this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version of
the License under which You originally received the Covered Software, or
under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a modified
version of this License if you rename the license and remove any
references to the name of the license steward (except to note that such
modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file, then
You may include the notice in a location (such as a LICENSE file in a relevant
directory) where a recipient would be likely to look for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - “Incompatible With Secondary Licenses” Notice
This Source Code Form is “Incompatible
With Secondary Licenses”, as defined by
the Mozilla Public License, v. 2.0.
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MIT License
Copyright (c) 2019 Preet Shihn
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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---
name: baoyu-url-to-markdown
description: Fetch any URL and convert to markdown using Chrome CDP. Saves the rendered HTML snapshot alongside the markdown, uses an upgraded Defuddle pipeline with better web-component handling and YouTube transcript extraction, and automatically falls back to the pre-Defuddle HTML-to-Markdown pipeline when needed. If local browser capture fails entirely, it can fall back to the hosted defuddle.md API. Supports two modes - auto-capture on page load, or wait for user signal (for pages requiring login). Use when user wants to save a webpage as markdown.
version: 1.58.1
metadata:
openclaw:
homepage: https://github.com/JimLiu/baoyu-skills#baoyu-url-to-markdown
requires:
anyBins:
- bun
- npx
---
# URL to Markdown
Fetches any URL via Chrome CDP, saves the rendered HTML snapshot, and converts it to clean markdown.
## Script Directory
**Important**: All scripts are located in the `scripts/` subdirectory of this skill.
**Agent Execution Instructions**:
1. Determine this SKILL.md file's directory path as `{baseDir}`
2. Script path = `{baseDir}/scripts/<script-name>.ts`
3. Resolve `${BUN_X}` runtime: if `bun` installed → `bun`; if `npx` available → `npx -y bun`; else suggest installing bun
4. Replace all `{baseDir}` and `${BUN_X}` in this document with actual values
**Script Reference**:
| Script | Purpose |
|--------|---------|
| `scripts/main.ts` | CLI entry point for URL fetching |
| `scripts/html-to-markdown.ts` | Markdown conversion entry point and converter selection |
| `scripts/defuddle-converter.ts` | Defuddle-based conversion |
| `scripts/legacy-converter.ts` | Pre-Defuddle legacy extraction and markdown conversion |
| `scripts/markdown-conversion-shared.ts` | Shared metadata parsing and markdown document helpers |
## Preferences (EXTEND.md)
Check EXTEND.md existence (priority order):
```bash
# macOS, Linux, WSL, Git Bash
test -f .baoyu-skills/baoyu-url-to-markdown/EXTEND.md && echo "project"
test -f "${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-url-to-markdown/EXTEND.md" && echo "xdg"
test -f "$HOME/.baoyu-skills/baoyu-url-to-markdown/EXTEND.md" && echo "user"
```
```powershell
# PowerShell (Windows)
if (Test-Path .baoyu-skills/baoyu-url-to-markdown/EXTEND.md) { "project" }
$xdg = if ($env:XDG_CONFIG_HOME) { $env:XDG_CONFIG_HOME } else { "$HOME/.config" }
if (Test-Path "$xdg/baoyu-skills/baoyu-url-to-markdown/EXTEND.md") { "xdg" }
if (Test-Path "$HOME/.baoyu-skills/baoyu-url-to-markdown/EXTEND.md") { "user" }
```
┌────────────────────────────────────────────────────────┬───────────────────┐
│ Path │ Location │
├────────────────────────────────────────────────────────┼───────────────────┤
│ .baoyu-skills/baoyu-url-to-markdown/EXTEND.md │ Project directory │
├────────────────────────────────────────────────────────┼───────────────────┤
│ $HOME/.baoyu-skills/baoyu-url-to-markdown/EXTEND.md │ User home │
└────────────────────────────────────────────────────────┴───────────────────┘
┌───────────┬───────────────────────────────────────────────────────────────────────────┐
│ Result │ Action │
├───────────┼───────────────────────────────────────────────────────────────────────────┤
│ Found │ Read, parse, apply settings │
├───────────┼───────────────────────────────────────────────────────────────────────────┤
│ Not found │ **MUST** run first-time setup (see below) — do NOT silently create defaults │
└───────────┴───────────────────────────────────────────────────────────────────────────┘
**EXTEND.md Supports**: Download media by default | Default output directory | Default capture mode | Timeout settings
### First-Time Setup (BLOCKING)
**CRITICAL**: When EXTEND.md is not found, you **MUST use `AskUserQuestion`** to ask the user for their preferences before creating EXTEND.md. **NEVER** create EXTEND.md with defaults without asking. This is a **BLOCKING** operation — do NOT proceed with any conversion until setup is complete.
Use `AskUserQuestion` with ALL questions in ONE call:
**Question 1** — header: "Media", question: "How to handle images and videos in pages?"
- "Ask each time (Recommended)" — After saving markdown, ask whether to download media
- "Always download" — Always download media to local imgs/ and videos/ directories
- "Never download" — Keep original remote URLs in markdown
**Question 2** — header: "Output", question: "Default output directory?"
- "url-to-markdown (Recommended)" — Save to ./url-to-markdown/{domain}/{slug}.md
- (User may choose "Other" to type a custom path)
**Question 3** — header: "Save", question: "Where to save preferences?"
- "User (Recommended)" — ~/.baoyu-skills/ (all projects)
- "Project" — .baoyu-skills/ (this project only)
After user answers, create EXTEND.md at the chosen location, confirm "Preferences saved to [path]", then continue.
Full reference: [references/config/first-time-setup.md](references/config/first-time-setup.md)
### Supported Keys
| Key | Default | Values | Description |
|-----|---------|--------|-------------|
| `download_media` | `ask` | `ask` / `1` / `0` | `ask` = prompt each time, `1` = always download, `0` = never |
| `default_output_dir` | empty | path or empty | Default output directory (empty = `./url-to-markdown/`) |
**EXTEND.md → CLI mapping**:
| EXTEND.md key | CLI argument | Notes |
|---------------|-------------|-------|
| `download_media: 1` | `--download-media` | |
| `default_output_dir: ./posts/` | `--output-dir ./posts/` | Directory path. Do NOT pass to `-o` (which expects a file path) |
**Value priority**:
1. CLI arguments (`--download-media`, `-o`, `--output-dir`)
2. EXTEND.md
3. Skill defaults
## Features
- Chrome CDP for full JavaScript rendering
- Two capture modes: auto or wait-for-user
- Save rendered HTML as a sibling `-captured.html` file
- Clean markdown output with metadata
- Upgraded Defuddle-first markdown conversion with automatic fallback to the pre-Defuddle extractor from git history
- Materializes shadow DOM content before conversion so web-component pages survive serialization better
- YouTube pages can include transcript/caption text in the markdown when YouTube exposes a caption track
- If local browser capture fails completely, can fall back to `defuddle.md/<url>` and still save markdown
- Handles login-required pages via wait mode
- Download images and videos to local directories
## Usage
```bash
# Auto mode (default) - capture when page loads
${BUN_X} {baseDir}/scripts/main.ts <url>
# Wait mode - wait for user signal before capture
${BUN_X} {baseDir}/scripts/main.ts <url> --wait
# Save to specific file
${BUN_X} {baseDir}/scripts/main.ts <url> -o output.md
# Save to a custom output directory (auto-generates filename)
${BUN_X} {baseDir}/scripts/main.ts <url> --output-dir ./posts/
# Download images and videos to local directories
${BUN_X} {baseDir}/scripts/main.ts <url> --download-media
```
## Options
| Option | Description |
|--------|-------------|
| `<url>` | URL to fetch |
| `-o <path>` | Output file path — must be a **file** path, not directory (default: auto-generated) |
| `--output-dir <dir>` | Base output directory — auto-generates `{dir}/{domain}/{slug}.md` (default: `./url-to-markdown/`) |
| `--wait` | Wait for user signal before capturing |
| `--timeout <ms>` | Page load timeout (default: 30000) |
| `--download-media` | Download image/video assets to local `imgs/` and `videos/`, and rewrite markdown links to local relative paths |
## Capture Modes
| Mode | Behavior | Use When |
|------|----------|----------|
| Auto (default) | Capture on network idle | Public pages, static content |
| Wait (`--wait`) | User signals when ready | Login-required, lazy loading, paywalls |
**Wait mode workflow**:
1. Run with `--wait` → script outputs "Press Enter when ready"
2. Ask user to confirm page is ready
3. Send newline to stdin to trigger capture
## Output Format
Each run saves two files side by side:
- Markdown: YAML front matter with `url`, `title`, `description`, `author`, `published`, optional `coverImage`, and `captured_at`, followed by converted markdown content
- HTML snapshot: `*-captured.html`, containing the rendered page HTML captured from Chrome
When Defuddle or page metadata provides a language hint, the markdown front matter also includes `language`.
The HTML snapshot is saved before any markdown media localization, so it stays a faithful capture of the page DOM used for conversion.
If the hosted `defuddle.md` API fallback is used, markdown is still saved, but there is no local `-captured.html` snapshot for that run.
## Output Directory
Default: `url-to-markdown/<domain>/<slug>.md`
With `--output-dir ./posts/`: `./posts/<domain>/<slug>.md`
HTML snapshot path uses the same basename:
- `url-to-markdown/<domain>/<slug>-captured.html`
- `./posts/<domain>/<slug>-captured.html`
- `<slug>`: From page title or URL path (kebab-case, 2-6 words)
- Conflict resolution: Append timestamp `<slug>-YYYYMMDD-HHMMSS.md`
When `--download-media` is enabled:
- Images are saved to `imgs/` next to the markdown file
- Videos are saved to `videos/` next to the markdown file
- Markdown media links are rewritten to local relative paths
## Conversion Fallback
Conversion order:
1. Try Defuddle first
2. For rich pages such as YouTube, prefer Defuddle's extractor-specific output (including transcripts when available) instead of replacing it with the legacy pipeline
3. If Defuddle throws, cannot load, returns obviously incomplete markdown, or captures lower-quality content than the legacy pipeline, automatically fall back to the pre-Defuddle extractor
4. If the entire local browser capture flow fails before markdown can be produced, try the hosted `https://defuddle.md/<url>` API and save its markdown output directly
5. The legacy fallback path uses the older Readability/selector/Next.js-data based HTML-to-Markdown implementation recovered from git history
CLI output will show:
- `Converter: defuddle` when Defuddle succeeds
- `Converter: legacy:...` plus `Fallback used: ...` when fallback was needed
- `Converter: defuddle-api` when local browser capture failed and the hosted API was used instead
## Media Download Workflow
Based on `download_media` setting in EXTEND.md:
| Setting | Behavior |
|---------|----------|
| `1` (always) | Run script with `--download-media` flag |
| `0` (never) | Run script without `--download-media` flag |
| `ask` (default) | Follow the ask-each-time flow below |
### Ask-Each-Time Flow
1. Run script **without** `--download-media` → markdown saved
2. Check saved markdown for remote media URLs (`https://` in image/video links)
3. **If no remote media found** → done, no prompt needed
4. **If remote media found** → use `AskUserQuestion`:
- header: "Media", question: "Download N images/videos to local files?"
- "Yes" — Download to local directories
- "No" — Keep remote URLs
5. If user confirms → run script **again** with `--download-media` (overwrites markdown with localized links)
## Environment Variables
| Variable | Description |
|----------|-------------|
| `URL_CHROME_PATH` | Custom Chrome executable path |
| `URL_DATA_DIR` | Custom data directory |
| `URL_CHROME_PROFILE_DIR` | Custom Chrome profile directory |
**Troubleshooting**: Chrome not found → set `URL_CHROME_PATH`. Timeout → increase `--timeout`. Complex pages → try `--wait` mode. If markdown quality is poor, inspect the saved `-captured.html` and check whether the run logged a legacy fallback.
### YouTube Notes
- The upgraded Defuddle path uses async extractors, so YouTube pages can include transcript text directly in the markdown body.
- Transcript availability depends on YouTube exposing a caption track. Videos with captions disabled, restricted playback, or blocked regional access may still produce description-only output.
- If the page needs time to finish loading descriptions, chapters, or player metadata, prefer `--wait` and capture after the watch page is fully hydrated.
### Hosted API Fallback
- The hosted fallback endpoint is `https://defuddle.md/<url>`. In shell form: `curl https://defuddle.md/stephango.com`
- Use it only when the local Chrome/CDP capture path fails outright. The local path still has higher fidelity because it can save the captured HTML and handle authenticated pages.
- The hosted API already returns Markdown with YAML frontmatter, so save that response as-is and then apply the normal media-localization step if requested.
## Extension Support
Custom configurations via EXTEND.md. See **Preferences** section for paths and supported options.
@@ -0,0 +1,106 @@
---
name: first-time-setup
description: First-time setup flow for baoyu-url-to-markdown preferences
---
# First-Time Setup
## Overview
When no EXTEND.md is found, guide user through preference setup.
**BLOCKING OPERATION**: This setup MUST complete before ANY other workflow steps. Do NOT:
- Start converting URLs
- Ask about URLs or output paths
- Proceed to any conversion
ONLY ask the questions in this setup flow, save EXTEND.md, then continue.
## Setup Flow
```
No EXTEND.md found
|
v
+---------------------+
| AskUserQuestion |
| (all questions) |
+---------------------+
|
v
+---------------------+
| Create EXTEND.md |
+---------------------+
|
v
Continue conversion
```
## Questions
**Language**: Use user's input language or saved language preference.
Use AskUserQuestion with ALL questions in ONE call:
### Question 1: Download Media
```yaml
header: "Media"
question: "How to handle images and videos in pages?"
options:
- label: "Ask each time (Recommended)"
description: "After saving markdown, ask whether to download media"
- label: "Always download"
description: "Always download media to local imgs/ and videos/ directories"
- label: "Never download"
description: "Keep original remote URLs in markdown"
```
### Question 2: Default Output Directory
```yaml
header: "Output"
question: "Default output directory?"
options:
- label: "url-to-markdown (Recommended)"
description: "Save to ./url-to-markdown/{domain}/{slug}.md"
```
Note: User will likely choose "Other" to type a custom path.
### Question 3: Save Location
```yaml
header: "Save"
question: "Where to save preferences?"
options:
- label: "User (Recommended)"
description: "~/.baoyu-skills/ (all projects)"
- label: "Project"
description: ".baoyu-skills/ (this project only)"
```
## Save Locations
| Choice | Path | Scope |
|--------|------|-------|
| User | `~/.baoyu-skills/baoyu-url-to-markdown/EXTEND.md` | All projects |
| Project | `.baoyu-skills/baoyu-url-to-markdown/EXTEND.md` | Current project |
## After Setup
1. Create directory if needed
2. Write EXTEND.md
3. Confirm: "Preferences saved to [path]"
4. Continue with conversion using saved preferences
## EXTEND.md Template
```md
download_media: [ask/1/0]
default_output_dir: [path or empty]
```
## Modifying Preferences Later
Users can edit EXTEND.md directly or delete it to trigger setup again.
+179
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@@ -0,0 +1,179 @@
import {
CdpConnection,
findChromeExecutable as findChromeExecutableBase,
findExistingChromeDebugPort,
getFreePort,
killChrome,
launchChrome as launchChromeBase,
sleep,
waitForChromeDebugPort,
type PlatformCandidates,
} from 'baoyu-chrome-cdp';
import { resolveUrlToMarkdownChromeProfileDir } from './paths.js';
import { NETWORK_IDLE_TIMEOUT_MS } from './constants.js';
const CHROME_CANDIDATES_FULL: PlatformCandidates = {
darwin: [
'/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
'/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary',
'/Applications/Google Chrome Beta.app/Contents/MacOS/Google Chrome Beta',
'/Applications/Chromium.app/Contents/MacOS/Chromium',
'/Applications/Microsoft Edge.app/Contents/MacOS/Microsoft Edge',
],
win32: [
'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe',
'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe',
'C:\\Program Files\\Microsoft\\Edge\\Application\\msedge.exe',
'C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe',
],
default: [
'/usr/bin/google-chrome',
'/usr/bin/google-chrome-stable',
'/usr/bin/chromium',
'/usr/bin/chromium-browser',
'/snap/bin/chromium',
'/usr/bin/microsoft-edge',
],
};
export { CdpConnection, getFreePort, killChrome, sleep, waitForChromeDebugPort };
export async function findExistingChromePort(): Promise<number | null> {
return await findExistingChromeDebugPort({
profileDir: resolveUrlToMarkdownChromeProfileDir(),
});
}
export function findChromeExecutable(): string | null {
return findChromeExecutableBase({
candidates: CHROME_CANDIDATES_FULL,
envNames: ['URL_CHROME_PATH'],
}) ?? null;
}
export async function launchChrome(url: string, port: number, headless = false) {
const chromePath = findChromeExecutable();
if (!chromePath) throw new Error('Chrome executable not found. Install Chrome or set URL_CHROME_PATH env.');
return await launchChromeBase({
chromePath,
profileDir: resolveUrlToMarkdownChromeProfileDir(),
port,
url,
headless,
extraArgs: ['--disable-popup-blocking'],
});
}
export async function waitForNetworkIdle(
cdp: CdpConnection,
sessionId: string,
timeoutMs: number = NETWORK_IDLE_TIMEOUT_MS,
): Promise<void> {
return new Promise((resolve) => {
let timer: ReturnType<typeof setTimeout> | null = null;
let pending = 0;
const cleanup = () => {
if (timer) clearTimeout(timer);
cdp.off('Network.requestWillBeSent', onRequest);
cdp.off('Network.loadingFinished', onFinish);
cdp.off('Network.loadingFailed', onFinish);
};
const done = () => { cleanup(); resolve(); };
const resetTimer = () => {
if (timer) clearTimeout(timer);
timer = setTimeout(done, timeoutMs);
};
const onRequest = () => { pending++; resetTimer(); };
const onFinish = () => { pending = Math.max(0, pending - 1); if (pending <= 2) resetTimer(); };
cdp.on('Network.requestWillBeSent', onRequest);
cdp.on('Network.loadingFinished', onFinish);
cdp.on('Network.loadingFailed', onFinish);
resetTimer();
});
}
export async function waitForPageLoad(
cdp: CdpConnection,
sessionId: string,
timeoutMs: number = 30_000,
): Promise<void> {
void sessionId;
return new Promise((resolve) => {
const timer = setTimeout(() => {
cdp.off('Page.loadEventFired', handler);
resolve();
}, timeoutMs);
const handler = () => {
clearTimeout(timer);
cdp.off('Page.loadEventFired', handler);
resolve();
};
cdp.on('Page.loadEventFired', handler);
});
}
export async function createTargetAndAttach(
cdp: CdpConnection,
url: string,
): Promise<{ targetId: string; sessionId: string }> {
const { targetId } = await cdp.send<{ targetId: string }>('Target.createTarget', { url });
const { sessionId } = await cdp.send<{ sessionId: string }>('Target.attachToTarget', { targetId, flatten: true });
await cdp.send('Network.enable', {}, { sessionId });
await cdp.send('Page.enable', {}, { sessionId });
return { targetId, sessionId };
}
export async function navigateAndWait(
cdp: CdpConnection,
sessionId: string,
url: string,
timeoutMs: number,
): Promise<void> {
const loadPromise = new Promise<void>((resolve, reject) => {
const timer = setTimeout(() => reject(new Error('Page load timeout')), timeoutMs);
const handler = (params: unknown) => {
const event = params as { name?: string };
if (event.name === 'load' || event.name === 'DOMContentLoaded') {
clearTimeout(timer);
cdp.off('Page.lifecycleEvent', handler);
resolve();
}
};
cdp.on('Page.lifecycleEvent', handler);
});
await cdp.send('Page.navigate', { url }, { sessionId });
await loadPromise;
}
export async function evaluateScript<T>(
cdp: CdpConnection,
sessionId: string,
expression: string,
timeoutMs: number = 30_000,
): Promise<T> {
const result = await cdp.send<{ result: { value?: T } }>(
'Runtime.evaluate',
{ expression, returnByValue: true, awaitPromise: true },
{ sessionId, timeoutMs },
);
return result.result.value as T;
}
export async function autoScroll(
cdp: CdpConnection,
sessionId: string,
steps: number = 8,
waitMs: number = 600,
): Promise<void> {
let lastHeight = await evaluateScript<number>(cdp, sessionId, 'document.body.scrollHeight');
for (let i = 0; i < steps; i++) {
await evaluateScript<void>(cdp, sessionId, 'window.scrollTo(0, document.body.scrollHeight)');
await sleep(waitMs);
const newHeight = await evaluateScript<number>(cdp, sessionId, 'document.body.scrollHeight');
if (newHeight === lastHeight) break;
lastHeight = newHeight;
}
await evaluateScript<void>(cdp, sessionId, 'window.scrollTo(0, 0)');
}
+13
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@@ -0,0 +1,13 @@
import { resolveUrlToMarkdownChromeProfileDir } from "./paths.js";
export const DEFAULT_USER_AGENT =
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36";
export const USER_DATA_DIR = resolveUrlToMarkdownChromeProfileDir();
export const DEFAULT_TIMEOUT_MS = 30_000;
export const CDP_CONNECT_TIMEOUT_MS = 15_000;
export const NETWORK_IDLE_TIMEOUT_MS = 1_500;
export const POST_LOAD_DELAY_MS = 800;
export const SCROLL_STEP_WAIT_MS = 600;
export const SCROLL_MAX_STEPS = 8;
@@ -0,0 +1,58 @@
import { JSDOM, VirtualConsole } from "jsdom";
import { Defuddle } from "defuddle/node";
import {
type ConversionResult,
type PageMetadata,
isMarkdownUsable,
normalizeMarkdown,
pickString,
} from "./markdown-conversion-shared.js";
export async function tryDefuddleConversion(
html: string,
url: string,
baseMetadata: PageMetadata
): Promise<{ ok: true; result: ConversionResult } | { ok: false; reason: string }> {
try {
const virtualConsole = new VirtualConsole();
virtualConsole.on("jsdomError", (error: Error & { type?: string }) => {
if (error.type === "css parsing" || /Could not parse CSS stylesheet/i.test(error.message)) {
return;
}
console.warn(`[url-to-markdown] jsdom: ${error.message}`);
});
const dom = new JSDOM(html, { url, virtualConsole });
const result = await Defuddle(dom, url, { markdown: true });
const markdown = normalizeMarkdown(result.content || "");
if (!isMarkdownUsable(markdown, html)) {
return { ok: false, reason: "Defuddle returned empty or incomplete markdown" };
}
return {
ok: true,
result: {
metadata: {
...baseMetadata,
title: pickString(result.title, baseMetadata.title) ?? "",
description: pickString(result.description, baseMetadata.description) ?? undefined,
author: pickString(result.author, baseMetadata.author) ?? undefined,
published: pickString(result.published, baseMetadata.published) ?? undefined,
coverImage: pickString(result.image, baseMetadata.coverImage) ?? undefined,
language: pickString(result.language, baseMetadata.language) ?? undefined,
},
markdown,
rawHtml: html,
conversionMethod: "defuddle",
variables: result.variables,
},
};
} catch (error) {
return {
ok: false,
reason: error instanceof Error ? error.message : String(error),
};
}
}
+135
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@@ -0,0 +1,135 @@
import {
createMarkdownDocument,
extractMetadataFromHtml,
formatMetadataYaml,
type ConversionResult,
type PageMetadata,
isYouTubeUrl,
} from "./markdown-conversion-shared.js";
import { tryDefuddleConversion } from "./defuddle-converter.js";
import {
convertWithLegacyExtractor,
scoreMarkdownQuality,
shouldCompareWithLegacy,
} from "./legacy-converter.js";
export type { ConversionResult, PageMetadata };
export { createMarkdownDocument, formatMetadataYaml };
export const absolutizeUrlsScript = String.raw`
(function() {
const baseUrl = document.baseURI || location.href;
const htmlClone = document.documentElement.cloneNode(true);
function materializeShadowDom(sourceRoot, cloneRoot) {
const sourceElements = Array.from(sourceRoot.querySelectorAll("*"));
const cloneElements = Array.from(cloneRoot.querySelectorAll("*"));
for (let i = sourceElements.length - 1; i >= 0; i--) {
const sourceEl = sourceElements[i];
const cloneEl = cloneElements[i];
const shadowRoot = sourceEl && sourceEl.shadowRoot;
if (!shadowRoot || !cloneEl || !shadowRoot.innerHTML) continue;
if (cloneEl.tagName && cloneEl.tagName.includes("-")) {
const wrapper = document.createElement("div");
wrapper.setAttribute("data-shadow-host", cloneEl.tagName.toLowerCase());
wrapper.innerHTML = shadowRoot.innerHTML;
cloneEl.replaceWith(wrapper);
} else {
cloneEl.innerHTML = shadowRoot.innerHTML;
}
}
}
function toAbsolute(url) {
if (!url) return url;
try { return new URL(url, baseUrl).href; } catch { return url; }
}
function absAttr(root, sel, attr) {
root.querySelectorAll(sel).forEach(el => {
const v = el.getAttribute(attr);
if (v) {
const a = toAbsolute(v);
if (a) el.setAttribute(attr, a);
}
});
}
function absSrcset(root, sel) {
root.querySelectorAll(sel).forEach(el => {
const s = el.getAttribute("srcset");
if (!s) return;
el.setAttribute("srcset", s.split(",").map(p => {
const t = p.trim();
if (!t) return "";
const [url, ...d] = t.split(/\s+/);
return d.length ? toAbsolute(url) + " " + d.join(" ") : toAbsolute(url);
}).filter(Boolean).join(", "));
});
}
materializeShadowDom(document.documentElement, htmlClone);
htmlClone.querySelectorAll("img[data-src], video[data-src], audio[data-src], source[data-src]").forEach(el => {
const ds = el.getAttribute("data-src");
if (ds && (!el.getAttribute("src") || el.getAttribute("src") === "" || el.getAttribute("src")?.startsWith("data:"))) {
el.setAttribute("src", ds);
}
});
absAttr(htmlClone, "a[href]", "href");
absAttr(htmlClone, "img[src], video[src], audio[src], source[src], iframe[src]", "src");
absAttr(htmlClone, "video[poster]", "poster");
absSrcset(htmlClone, "img[srcset], source[srcset]");
return { html: "<!doctype html>\n" + htmlClone.outerHTML };
})()
`;
function shouldPreferDefuddle(result: ConversionResult): boolean {
if (isYouTubeUrl(result.metadata.url)) {
return true;
}
const transcript = result.variables?.transcript?.trim();
if (transcript) {
return true;
}
return /^##?\s+transcript\b/im.test(result.markdown);
}
export async function extractContent(html: string, url: string): Promise<ConversionResult> {
const capturedAt = new Date().toISOString();
const baseMetadata = extractMetadataFromHtml(html, url, capturedAt);
const defuddleResult = await tryDefuddleConversion(html, url, baseMetadata);
if (defuddleResult.ok) {
if (shouldPreferDefuddle(defuddleResult.result)) {
return defuddleResult.result;
}
if (shouldCompareWithLegacy(defuddleResult.result.markdown)) {
const legacyResult = convertWithLegacyExtractor(html, baseMetadata);
const legacyScore = scoreMarkdownQuality(legacyResult.markdown);
const defuddleScore = scoreMarkdownQuality(defuddleResult.result.markdown);
if (legacyScore > defuddleScore + 120) {
return {
...legacyResult,
fallbackReason: "Legacy extractor produced higher-quality markdown than Defuddle",
};
}
}
return defuddleResult.result;
}
const fallbackResult = convertWithLegacyExtractor(html, baseMetadata);
return {
...fallbackResult,
fallbackReason: defuddleResult.reason,
};
}
+629
View File
@@ -0,0 +1,629 @@
import { Readability } from "@mozilla/readability";
import TurndownService from "turndown";
import { gfm } from "turndown-plugin-gfm";
import {
type AnyRecord,
type ConversionResult,
type PageMetadata,
GOOD_CONTENT_LENGTH,
MIN_CONTENT_LENGTH,
extractPublishedTime,
extractTextFromHtml,
extractTitle,
normalizeMarkdown,
parseDocument,
pickString,
sanitizeHtml,
} from "./markdown-conversion-shared.js";
interface ExtractionCandidate {
title: string | null;
byline: string | null;
excerpt: string | null;
published: string | null;
html: string | null;
textContent: string;
method: string;
}
const CONTENT_SELECTORS = [
"article",
"main article",
"[role='main'] article",
"[itemprop='articleBody']",
".article-content",
".article-body",
".post-content",
".entry-content",
".story-body",
"main",
"[role='main']",
"#content",
".content",
];
const REMOVE_SELECTORS = [
"script",
"style",
"noscript",
"template",
"iframe",
"svg",
"path",
"nav",
"aside",
"footer",
"header",
"form",
".advertisement",
".ads",
".social-share",
".related-articles",
".comments",
".newsletter",
".cookie-banner",
".cookie-consent",
"[role='navigation']",
"[aria-label*='cookie' i]",
];
const NEXT_DATA_CONTENT_PATHS = [
"props.pageProps.content.body",
"props.pageProps.article.body",
"props.pageProps.article.content",
"props.pageProps.post.body",
"props.pageProps.post.content",
"props.pageProps.data.body",
"props.pageProps.story.body.content",
];
const LOW_QUALITY_MARKERS = [
/Join The Conversation/i,
/One Community\. Many Voices/i,
/Read our community guidelines/i,
/Create a free account to share your thoughts/i,
/Become a Forbes Member/i,
/Subscribe to trusted journalism/i,
/\bComments\b/i,
];
function generateExcerpt(excerpt: string | null, textContent: string | null): string | null {
if (excerpt) return excerpt;
if (!textContent) return null;
const trimmed = textContent.trim();
if (!trimmed) return null;
return trimmed.length > 200 ? `${trimmed.slice(0, 200)}...` : trimmed;
}
function parseJsonLdItem(item: AnyRecord): ExtractionCandidate | null {
const type = Array.isArray(item["@type"]) ? item["@type"][0] : item["@type"];
if (typeof type !== "string" || !["Article", "NewsArticle", "BlogPosting", "WebPage", "ReportageNewsArticle"].includes(type)) {
return null;
}
const rawContent =
(typeof item.articleBody === "string" && item.articleBody) ||
(typeof item.text === "string" && item.text) ||
(typeof item.description === "string" && item.description) ||
null;
if (!rawContent) return null;
const content = rawContent.trim();
const htmlLike = /<\/?[a-z][\s\S]*>/i.test(content);
const textContent = htmlLike ? extractTextFromHtml(content) : content;
if (textContent.length < MIN_CONTENT_LENGTH) return null;
return {
title: pickString(item.headline, item.name),
byline: extractAuthorFromJsonLd(item.author),
excerpt: pickString(item.description),
published: pickString(item.datePublished, item.dateCreated),
html: htmlLike ? content : null,
textContent,
method: "json-ld",
};
}
function extractAuthorFromJsonLd(authorData: unknown): string | null {
if (typeof authorData === "string") return authorData;
if (!authorData || typeof authorData !== "object") return null;
if (Array.isArray(authorData)) {
const names = authorData
.map((author) => extractAuthorFromJsonLd(author))
.filter((name): name is string => Boolean(name));
return names.length > 0 ? names.join(", ") : null;
}
const author = authorData as AnyRecord;
return typeof author.name === "string" ? author.name : null;
}
function flattenJsonLdItems(data: unknown): AnyRecord[] {
if (!data || typeof data !== "object") return [];
if (Array.isArray(data)) return data.flatMap(flattenJsonLdItems);
const item = data as AnyRecord;
if (Array.isArray(item["@graph"])) {
return (item["@graph"] as unknown[]).flatMap(flattenJsonLdItems);
}
return [item];
}
function tryJsonLdExtraction(document: Document): ExtractionCandidate | null {
const scripts = document.querySelectorAll("script[type='application/ld+json']");
for (const script of scripts) {
try {
const data = JSON.parse(script.textContent ?? "");
for (const item of flattenJsonLdItems(data)) {
const extracted = parseJsonLdItem(item);
if (extracted) return extracted;
}
} catch {
// Ignore malformed blocks.
}
}
return null;
}
function getByPath(value: unknown, path: string): unknown {
let current = value;
for (const part of path.split(".")) {
if (!current || typeof current !== "object") return undefined;
current = (current as AnyRecord)[part];
}
return current;
}
function isContentBlockArray(value: unknown): value is AnyRecord[] {
if (!Array.isArray(value) || value.length === 0) return false;
return value.slice(0, 5).some((item) => {
if (!item || typeof item !== "object") return false;
const obj = item as AnyRecord;
return "type" in obj || "text" in obj || "textHtml" in obj || "content" in obj;
});
}
function extractTextFromContentBlocks(blocks: AnyRecord[]): string {
const parts: string[] = [];
function pushParagraph(text: string): void {
const trimmed = text.trim();
if (!trimmed) return;
parts.push(trimmed, "\n\n");
}
function walk(node: unknown): void {
if (!node || typeof node !== "object") return;
const block = node as AnyRecord;
if (typeof block.text === "string") {
pushParagraph(block.text);
return;
}
if (typeof block.textHtml === "string") {
pushParagraph(extractTextFromHtml(block.textHtml));
return;
}
if (Array.isArray(block.items)) {
for (const item of block.items) {
if (item && typeof item === "object") {
const text = pickString((item as AnyRecord).text);
if (text) parts.push(`- ${text}\n`);
}
}
parts.push("\n");
}
if (Array.isArray(block.components)) {
for (const component of block.components) {
walk(component);
}
}
if (Array.isArray(block.content)) {
for (const child of block.content) {
walk(child);
}
}
}
for (const block of blocks) {
walk(block);
}
return parts.join("").replace(/\n{3,}/g, "\n\n").trim();
}
function tryStringBodyExtraction(
content: string,
meta: AnyRecord,
document: Document,
method: string
): ExtractionCandidate | null {
if (!content || content.length < MIN_CONTENT_LENGTH) return null;
const isHtml = /<\/?[a-z][\s\S]*>/i.test(content);
const html = isHtml ? sanitizeHtml(content) : null;
const textContent = isHtml ? extractTextFromHtml(html) : content.trim();
if (textContent.length < MIN_CONTENT_LENGTH) return null;
return {
title: pickString(meta.headline, meta.title, extractTitle(document)),
byline: pickString(meta.byline, meta.author),
excerpt: pickString(meta.description, meta.excerpt, generateExcerpt(null, textContent)),
published: pickString(meta.datePublished, meta.publishedAt, extractPublishedTime(document)),
html,
textContent,
method,
};
}
function tryNextDataExtraction(document: Document): ExtractionCandidate | null {
try {
const script = document.querySelector("script#__NEXT_DATA__");
if (!script?.textContent) return null;
const data = JSON.parse(script.textContent) as AnyRecord;
const pageProps = (getByPath(data, "props.pageProps") ?? {}) as AnyRecord;
for (const path of NEXT_DATA_CONTENT_PATHS) {
const value = getByPath(data, path);
if (typeof value === "string") {
const parentPath = path.split(".").slice(0, -1).join(".");
const parent = (getByPath(data, parentPath) ?? {}) as AnyRecord;
const meta = {
...pageProps,
...parent,
title: parent.title ?? (pageProps.title as string | undefined),
};
const candidate = tryStringBodyExtraction(value, meta, document, "next-data");
if (candidate) return candidate;
}
if (isContentBlockArray(value)) {
const textContent = extractTextFromContentBlocks(value);
if (textContent.length < MIN_CONTENT_LENGTH) continue;
return {
title: pickString(
getByPath(data, "props.pageProps.content.headline"),
getByPath(data, "props.pageProps.article.headline"),
getByPath(data, "props.pageProps.article.title"),
getByPath(data, "props.pageProps.post.title"),
pageProps.title,
extractTitle(document)
),
byline: pickString(
getByPath(data, "props.pageProps.author.name"),
getByPath(data, "props.pageProps.article.author.name")
),
excerpt: pickString(
getByPath(data, "props.pageProps.content.description"),
getByPath(data, "props.pageProps.article.description"),
pageProps.description,
generateExcerpt(null, textContent)
),
published: pickString(
getByPath(data, "props.pageProps.content.datePublished"),
getByPath(data, "props.pageProps.article.datePublished"),
getByPath(data, "props.pageProps.publishedAt"),
extractPublishedTime(document)
),
html: null,
textContent,
method: "next-data",
};
}
}
} catch {
return null;
}
return null;
}
function buildReadabilityCandidate(
article: ReturnType<Readability["parse"]>,
document: Document,
method: string
): ExtractionCandidate | null {
const textContent = article?.textContent?.trim() ?? "";
if (textContent.length < MIN_CONTENT_LENGTH) return null;
return {
title: pickString(article?.title, extractTitle(document)),
byline: pickString((article as { byline?: string } | null)?.byline),
excerpt: pickString(article?.excerpt, generateExcerpt(null, textContent)),
published: pickString((article as { publishedTime?: string } | null)?.publishedTime, extractPublishedTime(document)),
html: article?.content ? sanitizeHtml(article.content) : null,
textContent,
method,
};
}
function tryReadability(document: Document): ExtractionCandidate | null {
try {
const strictClone = document.cloneNode(true) as Document;
const strictResult = buildReadabilityCandidate(
new Readability(strictClone).parse(),
document,
"readability"
);
if (strictResult) return strictResult;
const relaxedClone = document.cloneNode(true) as Document;
return buildReadabilityCandidate(
new Readability(relaxedClone, { charThreshold: 120 }).parse(),
document,
"readability-relaxed"
);
} catch {
return null;
}
}
function trySelectorExtraction(document: Document): ExtractionCandidate | null {
for (const selector of CONTENT_SELECTORS) {
const element = document.querySelector(selector);
if (!element) continue;
const clone = element.cloneNode(true) as Element;
for (const removeSelector of REMOVE_SELECTORS) {
for (const node of clone.querySelectorAll(removeSelector)) {
node.remove();
}
}
const html = sanitizeHtml(clone.innerHTML);
const textContent = extractTextFromHtml(html);
if (textContent.length < MIN_CONTENT_LENGTH) continue;
return {
title: extractTitle(document),
byline: null,
excerpt: generateExcerpt(null, textContent),
published: extractPublishedTime(document),
html,
textContent,
method: `selector:${selector}`,
};
}
return null;
}
function tryBodyExtraction(document: Document): ExtractionCandidate | null {
const body = document.body;
if (!body) return null;
const clone = body.cloneNode(true) as Element;
for (const removeSelector of REMOVE_SELECTORS) {
for (const node of clone.querySelectorAll(removeSelector)) {
node.remove();
}
}
const html = sanitizeHtml(clone.innerHTML);
const textContent = extractTextFromHtml(html);
if (!textContent) return null;
return {
title: extractTitle(document),
byline: null,
excerpt: generateExcerpt(null, textContent),
published: extractPublishedTime(document),
html,
textContent,
method: "body-fallback",
};
}
function pickBestCandidate(candidates: ExtractionCandidate[]): ExtractionCandidate | null {
if (candidates.length === 0) return null;
const methodOrder = [
"readability",
"readability-relaxed",
"next-data",
"json-ld",
"selector:",
"body-fallback",
];
function methodRank(method: string): number {
const idx = methodOrder.findIndex((entry) =>
entry.endsWith(":") ? method.startsWith(entry) : method === entry
);
return idx === -1 ? methodOrder.length : idx;
}
const ranked = [...candidates].sort((a, b) => {
const rankA = methodRank(a.method);
const rankB = methodRank(b.method);
if (rankA !== rankB) return rankA - rankB;
return (b.textContent.length ?? 0) - (a.textContent.length ?? 0);
});
for (const candidate of ranked) {
if (candidate.textContent.length >= GOOD_CONTENT_LENGTH) {
return candidate;
}
}
for (const candidate of ranked) {
if (candidate.textContent.length >= MIN_CONTENT_LENGTH) {
return candidate;
}
}
return ranked[0];
}
function extractFromHtml(html: string): ExtractionCandidate | null {
const document = parseDocument(html);
const readabilityCandidate = tryReadability(document);
const nextDataCandidate = tryNextDataExtraction(document);
const jsonLdCandidate = tryJsonLdExtraction(document);
const selectorCandidate = trySelectorExtraction(document);
const bodyCandidate = tryBodyExtraction(document);
const candidates = [
readabilityCandidate,
nextDataCandidate,
jsonLdCandidate,
selectorCandidate,
bodyCandidate,
].filter((candidate): candidate is ExtractionCandidate => Boolean(candidate));
const winner = pickBestCandidate(candidates);
if (!winner) return null;
return {
...winner,
title: winner.title ?? extractTitle(document),
published: winner.published ?? extractPublishedTime(document),
excerpt: winner.excerpt ?? generateExcerpt(null, winner.textContent),
};
}
const turndown = new TurndownService({
headingStyle: "atx",
hr: "---",
bulletListMarker: "-",
codeBlockStyle: "fenced",
emDelimiter: "*",
strongDelimiter: "**",
linkStyle: "inlined",
});
turndown.use(gfm);
turndown.remove(["script", "style", "iframe", "noscript", "template", "svg", "path"]);
turndown.addRule("collapseFigure", {
filter: "figure",
replacement(content) {
return `\n\n${content.trim()}\n\n`;
},
});
turndown.addRule("dropInvisibleAnchors", {
filter(node) {
return node.nodeName === "A" && !(node as Element).textContent?.trim();
},
replacement() {
return "";
},
});
function convertHtmlToMarkdown(html: string): string {
if (!html || !html.trim()) return "";
try {
const sanitized = sanitizeHtml(html);
return turndown.turndown(sanitized);
} catch {
return "";
}
}
function fallbackPlainText(html: string): string {
const document = parseDocument(html);
for (const selector of ["script", "style", "noscript", "template", "iframe", "svg", "path"]) {
for (const el of document.querySelectorAll(selector)) {
el.remove();
}
}
const text = document.body?.textContent ?? document.documentElement?.textContent ?? "";
return normalizeMarkdown(text.replace(/\s+/g, " "));
}
function countBylines(markdown: string): number {
return (markdown.match(/(^|\n)By\s+/g) || []).length;
}
function countUsefulParagraphs(markdown: string): number {
const paragraphs = normalizeMarkdown(markdown).split(/\n{2,}/);
let count = 0;
for (const paragraph of paragraphs) {
const trimmed = paragraph.trim();
if (!trimmed) continue;
if (/^!?\[[^\]]*\]\([^)]+\)$/.test(trimmed)) continue;
if (/^#{1,6}\s+/.test(trimmed)) continue;
if ((trimmed.match(/\b[\p{L}\p{N}']+\b/gu) || []).length < 8) continue;
count++;
}
return count;
}
function countMarkerHits(markdown: string, markers: RegExp[]): number {
let hits = 0;
for (const marker of markers) {
if (marker.test(markdown)) hits++;
}
return hits;
}
export function scoreMarkdownQuality(markdown: string): number {
const normalized = normalizeMarkdown(markdown);
const wordCount = (normalized.match(/\b[\p{L}\p{N}']+\b/gu) || []).length;
const usefulParagraphs = countUsefulParagraphs(normalized);
const headingCount = (normalized.match(/^#{1,6}\s+/gm) || []).length;
const markerHits = countMarkerHits(normalized, LOW_QUALITY_MARKERS);
const bylineCount = countBylines(normalized);
const staffCount = (normalized.match(/\bForbes Staff\b/gi) || []).length;
return (
Math.min(wordCount, 4000) +
usefulParagraphs * 40 +
headingCount * 10 -
markerHits * 180 -
Math.max(0, bylineCount - 1) * 120 -
Math.max(0, staffCount - 1) * 80
);
}
export function shouldCompareWithLegacy(markdown: string): boolean {
const normalized = normalizeMarkdown(markdown);
return (
countMarkerHits(normalized, LOW_QUALITY_MARKERS) > 0 ||
countBylines(normalized) > 1 ||
countUsefulParagraphs(normalized) < 6
);
}
export function convertWithLegacyExtractor(html: string, baseMetadata: PageMetadata): ConversionResult {
const extracted = extractFromHtml(html);
let markdown = extracted?.html ? convertHtmlToMarkdown(extracted.html) : "";
if (!markdown.trim()) {
markdown = extracted?.textContent?.trim() || fallbackPlainText(html);
}
return {
metadata: {
...baseMetadata,
title: pickString(extracted?.title, baseMetadata.title) ?? "",
description: pickString(extracted?.excerpt, baseMetadata.description) ?? undefined,
author: pickString(extracted?.byline, baseMetadata.author) ?? undefined,
published: pickString(extracted?.published, baseMetadata.published) ?? undefined,
},
markdown: normalizeMarkdown(markdown),
rawHtml: html,
conversionMethod: extracted ? `legacy:${extracted.method}` : "legacy:plain-text",
};
}
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import { createInterface } from "node:readline";
import { writeFile, mkdir, access } from "node:fs/promises";
import path from "node:path";
import process from "node:process";
import { CdpConnection, getFreePort, findExistingChromePort, launchChrome, waitForChromeDebugPort, waitForNetworkIdle, waitForPageLoad, autoScroll, evaluateScript, killChrome } from "./cdp.js";
import { absolutizeUrlsScript, extractContent, createMarkdownDocument, type ConversionResult } from "./html-to-markdown.js";
import { localizeMarkdownMedia, countRemoteMedia } from "./media-localizer.js";
import { resolveUrlToMarkdownDataDir } from "./paths.js";
import { DEFAULT_TIMEOUT_MS, CDP_CONNECT_TIMEOUT_MS, NETWORK_IDLE_TIMEOUT_MS, POST_LOAD_DELAY_MS, SCROLL_STEP_WAIT_MS, SCROLL_MAX_STEPS } from "./constants.js";
function sleep(ms: number): Promise<void> {
return new Promise((resolve) => setTimeout(resolve, ms));
}
async function fileExists(filePath: string): Promise<boolean> {
try {
await access(filePath);
return true;
} catch {
return false;
}
}
interface Args {
url: string;
output?: string;
outputDir?: string;
wait: boolean;
timeout: number;
downloadMedia: boolean;
}
function parseArgs(argv: string[]): Args {
const args: Args = { url: "", wait: false, timeout: DEFAULT_TIMEOUT_MS, downloadMedia: false };
for (let i = 2; i < argv.length; i++) {
const arg = argv[i];
if (arg === "--wait" || arg === "-w") {
args.wait = true;
} else if (arg === "-o" || arg === "--output") {
args.output = argv[++i];
} else if (arg === "--timeout" || arg === "-t") {
args.timeout = parseInt(argv[++i], 10) || DEFAULT_TIMEOUT_MS;
} else if (arg === "--output-dir") {
args.outputDir = argv[++i];
} else if (arg === "--download-media") {
args.downloadMedia = true;
} else if (!arg.startsWith("-") && !args.url) {
args.url = arg;
}
}
return args;
}
function generateSlug(title: string, url: string): string {
const text = title || new URL(url).pathname.replace(/\//g, "-");
return text
.toLowerCase()
.replace(/[^\w\s-]/g, "")
.replace(/\s+/g, "-")
.replace(/-+/g, "-")
.replace(/^-|-$/g, "")
.slice(0, 50) || "page";
}
function formatTimestamp(): string {
const now = new Date();
const pad = (n: number) => n.toString().padStart(2, "0");
return `${now.getFullYear()}${pad(now.getMonth() + 1)}${pad(now.getDate())}-${pad(now.getHours())}${pad(now.getMinutes())}${pad(now.getSeconds())}`;
}
function deriveHtmlSnapshotPath(markdownPath: string): string {
const parsed = path.parse(markdownPath);
const basename = parsed.ext ? parsed.name : parsed.base;
return path.join(parsed.dir, `${basename}-captured.html`);
}
function extractTitleFromMarkdownDocument(document: string): string {
const normalized = document.replace(/\r\n/g, "\n");
const frontmatterMatch = normalized.match(/^---\n([\s\S]*?)\n---\n?/);
if (frontmatterMatch) {
const titleLine = frontmatterMatch[1]
.split("\n")
.find((line) => /^title:\s*/i.test(line));
if (titleLine) {
const rawValue = titleLine.replace(/^title:\s*/i, "").trim();
const unquoted = rawValue
.replace(/^"(.*)"$/, "$1")
.replace(/^'(.*)'$/, "$1")
.replace(/\\"/g, '"');
if (unquoted) return unquoted;
}
}
const headingMatch = normalized.match(/^#\s+(.+)$/m);
return headingMatch?.[1]?.trim() ?? "";
}
function buildDefuddleApiUrl(targetUrl: string): string {
return `https://defuddle.md/${encodeURIComponent(targetUrl)}`;
}
async function fetchDefuddleApiMarkdown(targetUrl: string): Promise<{ markdown: string; title: string }> {
const apiUrl = buildDefuddleApiUrl(targetUrl);
const response = await fetch(apiUrl, {
headers: {
accept: "text/markdown,text/plain;q=0.9,*/*;q=0.1",
},
});
if (!response.ok) {
throw new Error(`defuddle.md returned ${response.status} ${response.statusText}`);
}
const markdown = (await response.text()).replace(/\r\n/g, "\n").trim();
if (!markdown) {
throw new Error("defuddle.md returned empty markdown");
}
return {
markdown,
title: extractTitleFromMarkdownDocument(markdown),
};
}
async function generateOutputPath(url: string, title: string, outputDir?: string): Promise<string> {
const domain = new URL(url).hostname.replace(/^www\./, "");
const slug = generateSlug(title, url);
const dataDir = outputDir ? path.resolve(outputDir) : resolveUrlToMarkdownDataDir();
const basePath = path.join(dataDir, domain, `${slug}.md`);
if (!(await fileExists(basePath))) {
return basePath;
}
const timestampSlug = `${slug}-${formatTimestamp()}`;
return path.join(dataDir, domain, `${timestampSlug}.md`);
}
async function waitForUserSignal(): Promise<void> {
console.log("Page opened. Press Enter when ready to capture...");
const rl = createInterface({ input: process.stdin, output: process.stdout });
await new Promise<void>((resolve) => {
rl.once("line", () => { rl.close(); resolve(); });
});
}
async function captureUrl(args: Args): Promise<ConversionResult> {
const existingPort = await findExistingChromePort();
const reusing = existingPort !== null;
const port = existingPort ?? await getFreePort();
const chrome = reusing ? null : await launchChrome(args.url, port, false);
if (reusing) console.log(`Reusing existing Chrome on port ${port}`);
let cdp: CdpConnection | null = null;
let targetId: string | null = null;
try {
const wsUrl = await waitForChromeDebugPort(port, 30_000);
cdp = await CdpConnection.connect(wsUrl, CDP_CONNECT_TIMEOUT_MS);
let sessionId: string;
if (reusing) {
const created = await cdp.send<{ targetId: string }>("Target.createTarget", { url: args.url });
targetId = created.targetId;
const attached = await cdp.send<{ sessionId: string }>("Target.attachToTarget", { targetId, flatten: true });
sessionId = attached.sessionId;
await cdp.send("Network.enable", {}, { sessionId });
await cdp.send("Page.enable", {}, { sessionId });
} else {
const targets = await cdp.send<{ targetInfos: Array<{ targetId: string; type: string; url: string }> }>("Target.getTargets");
const pageTarget = targets.targetInfos.find(t => t.type === "page" && t.url.startsWith("http"));
if (!pageTarget) throw new Error("No page target found");
targetId = pageTarget.targetId;
const attached = await cdp.send<{ sessionId: string }>("Target.attachToTarget", { targetId, flatten: true });
sessionId = attached.sessionId;
await cdp.send("Network.enable", {}, { sessionId });
await cdp.send("Page.enable", {}, { sessionId });
}
if (args.wait) {
await waitForUserSignal();
} else {
console.log("Waiting for page to load...");
await Promise.race([
waitForPageLoad(cdp, sessionId, 15_000),
sleep(8_000)
]);
await waitForNetworkIdle(cdp, sessionId, NETWORK_IDLE_TIMEOUT_MS);
await sleep(POST_LOAD_DELAY_MS);
console.log("Scrolling to trigger lazy load...");
await autoScroll(cdp, sessionId, SCROLL_MAX_STEPS, SCROLL_STEP_WAIT_MS);
await sleep(POST_LOAD_DELAY_MS);
}
console.log("Capturing page content...");
const { html } = await evaluateScript<{ html: string }>(
cdp, sessionId, absolutizeUrlsScript, args.timeout
);
return await extractContent(html, args.url);
} finally {
if (reusing) {
if (cdp && targetId) {
try { await cdp.send("Target.closeTarget", { targetId }, { timeoutMs: 5_000 }); } catch {}
}
if (cdp) cdp.close();
} else {
if (cdp) {
try { await cdp.send("Browser.close", {}, { timeoutMs: 5_000 }); } catch {}
cdp.close();
}
if (chrome) killChrome(chrome);
}
}
}
async function main(): Promise<void> {
const args = parseArgs(process.argv);
if (!args.url) {
console.error("Usage: bun main.ts <url> [-o output.md] [--output-dir dir] [--wait] [--timeout ms] [--download-media]");
process.exit(1);
}
try {
new URL(args.url);
} catch {
console.error(`Invalid URL: ${args.url}`);
process.exit(1);
}
if (args.output) {
const stat = await import("node:fs").then(fs => fs.statSync(args.output!, { throwIfNoEntry: false }));
if (stat?.isDirectory()) {
console.error(`Error: -o path is a directory, not a file: ${args.output}`);
process.exit(1);
}
}
console.log(`Fetching: ${args.url}`);
console.log(`Mode: ${args.wait ? "wait" : "auto"}`);
let outputPath: string;
let htmlSnapshotPath: string | null = null;
let document: string;
let conversionMethod: string;
let fallbackReason: string | undefined;
try {
const result = await captureUrl(args);
outputPath = args.output || await generateOutputPath(args.url, result.metadata.title, args.outputDir);
const outputDir = path.dirname(outputPath);
htmlSnapshotPath = deriveHtmlSnapshotPath(outputPath);
await mkdir(outputDir, { recursive: true });
await writeFile(htmlSnapshotPath, result.rawHtml, "utf-8");
document = createMarkdownDocument(result);
conversionMethod = result.conversionMethod;
fallbackReason = result.fallbackReason;
} catch (error) {
const primaryError = error instanceof Error ? error.message : String(error);
console.warn(`Primary capture failed: ${primaryError}`);
console.warn("Trying defuddle.md API fallback...");
try {
const remoteResult = await fetchDefuddleApiMarkdown(args.url);
outputPath = args.output || await generateOutputPath(args.url, remoteResult.title, args.outputDir);
await mkdir(path.dirname(outputPath), { recursive: true });
document = remoteResult.markdown;
conversionMethod = "defuddle-api";
fallbackReason = `Local browser capture failed: ${primaryError}`;
} catch (remoteError) {
const remoteMessage = remoteError instanceof Error ? remoteError.message : String(remoteError);
throw new Error(`Local browser capture failed (${primaryError}); defuddle.md fallback failed (${remoteMessage})`);
}
}
if (args.downloadMedia) {
const mediaResult = await localizeMarkdownMedia(document, {
markdownPath: outputPath,
log: console.log,
});
document = mediaResult.markdown;
if (mediaResult.downloadedImages > 0 || mediaResult.downloadedVideos > 0) {
console.log(`Downloaded: ${mediaResult.downloadedImages} images, ${mediaResult.downloadedVideos} videos`);
}
} else {
const { images, videos } = countRemoteMedia(document);
if (images > 0 || videos > 0) {
console.log(`Remote media found: ${images} images, ${videos} videos`);
}
}
await writeFile(outputPath, document, "utf-8");
console.log(`Saved: ${outputPath}`);
if (htmlSnapshotPath) {
console.log(`Saved HTML: ${htmlSnapshotPath}`);
} else {
console.log("Saved HTML: unavailable (defuddle.md fallback)");
}
console.log(`Title: ${extractTitleFromMarkdownDocument(document) || "(no title)"}`);
console.log(`Converter: ${conversionMethod}`);
if (fallbackReason) {
console.warn(`Fallback used: ${fallbackReason}`);
}
}
main().catch((err) => {
console.error("Error:", err instanceof Error ? err.message : String(err));
process.exit(1);
});
@@ -0,0 +1,305 @@
import { parseHTML } from "linkedom";
export interface PageMetadata {
url: string;
title: string;
description?: string;
author?: string;
published?: string;
coverImage?: string;
language?: string;
captured_at: string;
}
export interface ConversionResult {
metadata: PageMetadata;
markdown: string;
rawHtml: string;
conversionMethod: string;
fallbackReason?: string;
variables?: Record<string, string>;
}
export type AnyRecord = Record<string, unknown>;
export const MIN_CONTENT_LENGTH = 120;
export const GOOD_CONTENT_LENGTH = 900;
const PUBLISHED_TIME_SELECTORS = [
"meta[property='article:published_time']",
"meta[name='pubdate']",
"meta[name='publishdate']",
"meta[name='date']",
"time[datetime]",
];
const ARTICLE_TYPES = new Set([
"Article",
"NewsArticle",
"BlogPosting",
"WebPage",
"ReportageNewsArticle",
]);
export function pickString(...values: unknown[]): string | null {
for (const value of values) {
if (typeof value === "string") {
const trimmed = value.trim();
if (trimmed) return trimmed;
}
}
return null;
}
export function normalizeMarkdown(markdown: string): string {
return markdown
.replace(/\r\n/g, "\n")
.replace(/[ \t]+\n/g, "\n")
.replace(/\n{3,}/g, "\n\n")
.trim();
}
export function parseDocument(html: string): Document {
const normalized = /<\s*html[\s>]/i.test(html)
? html
: `<!doctype html><html><body>${html}</body></html>`;
return parseHTML(normalized).document as unknown as Document;
}
export function sanitizeHtml(html: string): string {
const { document } = parseHTML(`<div id="__root">${html}</div>`);
const root = document.querySelector("#__root");
if (!root) return html;
for (const selector of ["script", "style", "iframe", "noscript", "template", "svg", "path"]) {
for (const el of root.querySelectorAll(selector)) {
el.remove();
}
}
return root.innerHTML;
}
export function extractTextFromHtml(html: string): string {
const { document } = parseHTML(`<!doctype html><html><body>${html}</body></html>`);
for (const selector of ["script", "style", "noscript", "template", "iframe", "svg", "path"]) {
for (const el of document.querySelectorAll(selector)) {
el.remove();
}
}
return document.body?.textContent?.replace(/\s+/g, " ").trim() ?? "";
}
export function getMetaContent(document: Document, names: string[]): string | null {
for (const name of names) {
const element =
document.querySelector(`meta[name="${name}"]`) ??
document.querySelector(`meta[property="${name}"]`);
const content = element?.getAttribute("content");
if (content && content.trim()) return content.trim();
}
return null;
}
function normalizeLanguageTag(value: string | null): string | null {
if (!value) return null;
const trimmed = value.trim();
if (!trimmed) return null;
const primary = trimmed.split(/[,\s;]/, 1)[0]?.trim();
if (!primary) return null;
return primary.replace(/_/g, "-");
}
function flattenJsonLdItems(data: unknown): AnyRecord[] {
if (!data || typeof data !== "object") return [];
if (Array.isArray(data)) return data.flatMap(flattenJsonLdItems);
const item = data as AnyRecord;
if (Array.isArray(item["@graph"])) {
return (item["@graph"] as unknown[]).flatMap(flattenJsonLdItems);
}
return [item];
}
function parseJsonLdScripts(document: Document): AnyRecord[] {
const results: AnyRecord[] = [];
const scripts = document.querySelectorAll("script[type='application/ld+json']");
for (const script of scripts) {
try {
const data = JSON.parse(script.textContent ?? "");
results.push(...flattenJsonLdItems(data));
} catch {
// Ignore malformed blocks.
}
}
return results;
}
function isArticleType(item: AnyRecord): boolean {
const value = Array.isArray(item["@type"]) ? item["@type"][0] : item["@type"];
return typeof value === "string" && ARTICLE_TYPES.has(value);
}
function extractAuthorFromJsonLd(authorData: unknown): string | null {
if (typeof authorData === "string") return authorData;
if (!authorData || typeof authorData !== "object") return null;
if (Array.isArray(authorData)) {
const names = authorData
.map((author) => extractAuthorFromJsonLd(author))
.filter((name): name is string => Boolean(name));
return names.length > 0 ? names.join(", ") : null;
}
const author = authorData as AnyRecord;
return typeof author.name === "string" ? author.name : null;
}
function extractPrimaryJsonLdMeta(document: Document): Partial<PageMetadata> {
for (const item of parseJsonLdScripts(document)) {
if (!isArticleType(item)) continue;
return {
title: pickString(item.headline, item.name) ?? undefined,
description: pickString(item.description) ?? undefined,
author: extractAuthorFromJsonLd(item.author) ?? undefined,
published: pickString(item.datePublished, item.dateCreated) ?? undefined,
coverImage:
pickString(
item.image,
(item.image as AnyRecord | undefined)?.url,
(Array.isArray(item.image) ? item.image[0] : undefined) as unknown
) ?? undefined,
};
}
return {};
}
export function extractPublishedTime(document: Document): string | null {
for (const selector of PUBLISHED_TIME_SELECTORS) {
const el = document.querySelector(selector);
if (!el) continue;
const value = el.getAttribute("content") ?? el.getAttribute("datetime");
if (value && value.trim()) return value.trim();
}
return null;
}
export function extractTitle(document: Document): string | null {
const ogTitle = document.querySelector("meta[property='og:title']")?.getAttribute("content");
if (ogTitle && ogTitle.trim()) return ogTitle.trim();
const twitterTitle = document.querySelector("meta[name='twitter:title']")?.getAttribute("content");
if (twitterTitle && twitterTitle.trim()) return twitterTitle.trim();
const title = document.querySelector("title")?.textContent?.trim();
if (title) {
const cleaned = title.split(/\s*[-|–—]\s*/)[0]?.trim();
if (cleaned) return cleaned;
}
const h1 = document.querySelector("h1")?.textContent?.trim();
return h1 || null;
}
export function extractMetadataFromHtml(html: string, url: string, capturedAt: string): PageMetadata {
const document = parseDocument(html);
const jsonLd = extractPrimaryJsonLdMeta(document);
const timeEl = document.querySelector("time[datetime]");
const htmlLang = normalizeLanguageTag(document.documentElement?.getAttribute("lang"));
const metaLanguage = normalizeLanguageTag(
pickString(
getMetaContent(document, ["language", "content-language", "og:locale"]),
document.querySelector("meta[http-equiv='content-language']")?.getAttribute("content")
)
);
return {
url,
title:
pickString(
getMetaContent(document, ["og:title", "twitter:title"]),
jsonLd.title,
document.querySelector("h1")?.textContent,
document.title
) ?? "",
description:
pickString(
getMetaContent(document, ["description", "og:description", "twitter:description"]),
jsonLd.description
) ?? undefined,
author:
pickString(
getMetaContent(document, ["author", "article:author", "twitter:creator"]),
jsonLd.author
) ?? undefined,
published:
pickString(
timeEl?.getAttribute("datetime"),
getMetaContent(document, ["article:published_time", "datePublished", "publishdate", "date"]),
jsonLd.published,
extractPublishedTime(document)
) ?? undefined,
coverImage:
pickString(
getMetaContent(document, ["og:image", "twitter:image", "twitter:image:src"]),
jsonLd.coverImage
) ?? undefined,
language: pickString(htmlLang, metaLanguage) ?? undefined,
captured_at: capturedAt,
};
}
export function isMarkdownUsable(markdown: string, html: string): boolean {
const normalized = normalizeMarkdown(markdown);
if (!normalized) return false;
const htmlTextLength = extractTextFromHtml(html).length;
if (htmlTextLength < MIN_CONTENT_LENGTH) return true;
if (normalized.length >= 80) return true;
return normalized.length >= Math.min(200, Math.floor(htmlTextLength * 0.2));
}
export function isYouTubeUrl(url: string): boolean {
try {
const hostname = new URL(url).hostname.toLowerCase();
return hostname === "youtu.be" || hostname.endsWith(".youtube.com") || hostname === "youtube.com";
} catch {
return false;
}
}
function escapeYamlValue(value: string): string {
return value.replace(/\\/g, "\\\\").replace(/"/g, '\\"').replace(/\r?\n/g, "\\n");
}
export function formatMetadataYaml(meta: PageMetadata): string {
const lines = ["---"];
lines.push(`url: ${meta.url}`);
lines.push(`title: "${escapeYamlValue(meta.title)}"`);
if (meta.description) lines.push(`description: "${escapeYamlValue(meta.description)}"`);
if (meta.author) lines.push(`author: "${escapeYamlValue(meta.author)}"`);
if (meta.published) lines.push(`published: "${escapeYamlValue(meta.published)}"`);
if (meta.coverImage) lines.push(`coverImage: "${escapeYamlValue(meta.coverImage)}"`);
if (meta.language) lines.push(`language: "${escapeYamlValue(meta.language)}"`);
lines.push(`captured_at: "${escapeYamlValue(meta.captured_at)}"`);
lines.push("---");
return lines.join("\n");
}
export function createMarkdownDocument(result: ConversionResult): string {
const yaml = formatMetadataYaml(result.metadata);
const escapedTitle = result.metadata.title.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
const titleRegex = new RegExp(`^#\\s+${escapedTitle}\\s*(\\n|$)`, "i");
const hasTitle = titleRegex.test(result.markdown.trimStart());
const title = result.metadata.title && !hasTitle ? `\n\n# ${result.metadata.title}\n\n` : "\n\n";
return yaml + title + result.markdown;
}
+317
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@@ -0,0 +1,317 @@
import path from "node:path";
import { mkdir, writeFile } from "node:fs/promises";
type MediaKind = "image" | "video";
type MediaHint = "image" | "unknown";
type MarkdownLinkCandidate = {
url: string;
hint: MediaHint;
};
export type LocalizeMarkdownMediaOptions = {
markdownPath: string;
log?: (message: string) => void;
};
export type LocalizeMarkdownMediaResult = {
markdown: string;
downloadedImages: number;
downloadedVideos: number;
imageDir: string | null;
videoDir: string | null;
};
const MARKDOWN_LINK_RE = /(!?\[[^\]\n]*\])\((<)?(https?:\/\/[^)\s>]+)(>)?\)/g;
const FRONTMATTER_COVER_RE = /^(coverImage:\s*")(https?:\/\/[^"]+)(")/m;
const IMAGE_EXTENSIONS = new Set([
"jpg",
"jpeg",
"png",
"webp",
"gif",
"bmp",
"avif",
"heic",
"heif",
"svg",
]);
const VIDEO_EXTENSIONS = new Set(["mp4", "m4v", "mov", "webm", "mkv"]);
const MIME_EXTENSION_MAP: Record<string, string> = {
"image/jpeg": "jpg",
"image/jpg": "jpg",
"image/png": "png",
"image/webp": "webp",
"image/gif": "gif",
"image/bmp": "bmp",
"image/avif": "avif",
"image/heic": "heic",
"image/heif": "heif",
"image/svg+xml": "svg",
"video/mp4": "mp4",
"video/webm": "webm",
"video/quicktime": "mov",
"video/x-m4v": "m4v",
};
const DOWNLOAD_USER_AGENT =
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36";
function normalizeContentType(raw: string | null): string {
return raw?.split(";")[0]?.trim().toLowerCase() ?? "";
}
function normalizeExtension(raw: string | undefined | null): string | undefined {
if (!raw) return undefined;
const trimmed = raw.replace(/^\./, "").trim().toLowerCase();
if (!trimmed) return undefined;
if (trimmed === "jpeg") return "jpg";
if (trimmed === "jpg") return "jpg";
return trimmed;
}
function resolveExtensionFromUrl(rawUrl: string): string | undefined {
try {
const parsed = new URL(rawUrl);
const extFromPath = normalizeExtension(path.posix.extname(parsed.pathname));
if (extFromPath) return extFromPath;
const extFromFormat = normalizeExtension(parsed.searchParams.get("format"));
if (extFromFormat) return extFromFormat;
} catch {
return undefined;
}
return undefined;
}
function resolveKindFromContentType(contentType: string): MediaKind | undefined {
if (!contentType) return undefined;
if (contentType.startsWith("image/")) return "image";
if (contentType.startsWith("video/")) return "video";
return undefined;
}
function resolveKindFromExtension(ext: string | undefined): MediaKind | undefined {
if (!ext) return undefined;
if (IMAGE_EXTENSIONS.has(ext)) return "image";
if (VIDEO_EXTENSIONS.has(ext)) return "video";
return undefined;
}
function resolveMediaKind(
rawUrl: string,
contentType: string,
extension: string | undefined,
hint: MediaHint
): MediaKind | undefined {
const kindFromType = resolveKindFromContentType(contentType);
if (kindFromType) return kindFromType;
const kindFromExtension = resolveKindFromExtension(extension);
if (kindFromExtension) return kindFromExtension;
if (contentType && contentType !== "application/octet-stream") {
return undefined;
}
return hint === "image" ? "image" : undefined;
}
function resolveOutputExtension(
contentType: string,
extension: string | undefined,
kind: MediaKind
): string {
const extFromMime = normalizeExtension(MIME_EXTENSION_MAP[contentType]);
if (extFromMime) return extFromMime;
const normalizedExt = normalizeExtension(extension);
if (normalizedExt) return normalizedExt;
return kind === "video" ? "mp4" : "jpg";
}
function safeDecodeURIComponent(value: string): string {
try {
return decodeURIComponent(value);
} catch {
return value;
}
}
function sanitizeFileSegment(input: string): string {
return input
.replace(/[^a-zA-Z0-9_-]+/g, "-")
.replace(/-+/g, "-")
.replace(/^[-_]+|[-_]+$/g, "")
.slice(0, 48);
}
function resolveFileStem(rawUrl: string, extension: string): string {
try {
const parsed = new URL(rawUrl);
const base = path.posix.basename(parsed.pathname);
if (!base) return "";
const decodedBase = safeDecodeURIComponent(base);
const normalizedExt = normalizeExtension(extension);
const stripExt = normalizedExt ? new RegExp(`\\.${normalizedExt}$`, "i") : null;
const rawStem = stripExt ? decodedBase.replace(stripExt, "") : decodedBase;
return sanitizeFileSegment(rawStem);
} catch {
return "";
}
}
function buildFileName(kind: MediaKind, index: number, sourceUrl: string, extension: string): string {
const stem = resolveFileStem(sourceUrl, extension);
const prefix = kind === "image" ? "img" : "video";
const serial = String(index).padStart(3, "0");
const suffix = stem ? `-${stem}` : "";
return `${prefix}-${serial}${suffix}.${extension}`;
}
function collectMarkdownLinkCandidates(markdown: string): MarkdownLinkCandidate[] {
const candidates: MarkdownLinkCandidate[] = [];
const seen = new Set<string>();
const fmMatch = markdown.match(/^---\n([\s\S]*?)\n---/);
if (fmMatch) {
const coverMatch = fmMatch[1]?.match(FRONTMATTER_COVER_RE);
if (coverMatch?.[2] && !seen.has(coverMatch[2])) {
seen.add(coverMatch[2]);
candidates.push({ url: coverMatch[2], hint: "image" });
}
}
MARKDOWN_LINK_RE.lastIndex = 0;
let match: RegExpExecArray | null;
while ((match = MARKDOWN_LINK_RE.exec(markdown))) {
const label = match[1] ?? "";
const rawUrl = match[3] ?? "";
if (!rawUrl || seen.has(rawUrl)) continue;
seen.add(rawUrl);
candidates.push({
url: rawUrl,
hint: label.startsWith("![") ? "image" : "unknown",
});
}
return candidates;
}
function rewriteMarkdownMediaLinks(markdown: string, replacements: Map<string, string>): string {
if (replacements.size === 0) return markdown;
MARKDOWN_LINK_RE.lastIndex = 0;
let result = markdown.replace(MARKDOWN_LINK_RE, (full, label, _openAngle, rawUrl) => {
const localPath = replacements.get(rawUrl);
if (!localPath) return full;
return `${label}(${localPath})`;
});
result = result.replace(FRONTMATTER_COVER_RE, (full, prefix, rawUrl, suffix) => {
const localPath = replacements.get(rawUrl);
if (!localPath) return full;
return `${prefix}${localPath}${suffix}`;
});
return result;
}
export async function localizeMarkdownMedia(
markdown: string,
options: LocalizeMarkdownMediaOptions
): Promise<LocalizeMarkdownMediaResult> {
const log = options.log ?? (() => {});
const markdownDir = path.dirname(options.markdownPath);
const candidates = collectMarkdownLinkCandidates(markdown);
if (candidates.length === 0) {
return {
markdown,
downloadedImages: 0,
downloadedVideos: 0,
imageDir: null,
videoDir: null,
};
}
const replacements = new Map<string, string>();
let downloadedImages = 0;
let downloadedVideos = 0;
for (const candidate of candidates) {
try {
const response = await fetch(candidate.url, {
method: "GET",
redirect: "follow",
headers: {
"user-agent": DOWNLOAD_USER_AGENT,
},
});
if (!response.ok) {
log(`[url-to-markdown] Skip media (${response.status}): ${candidate.url}`);
continue;
}
const sourceUrl = response.url || candidate.url;
const contentType = normalizeContentType(response.headers.get("content-type"));
const extension = resolveExtensionFromUrl(sourceUrl) ?? resolveExtensionFromUrl(candidate.url);
const kind = resolveMediaKind(sourceUrl, contentType, extension, candidate.hint);
if (!kind) {
continue;
}
const outputExtension = resolveOutputExtension(contentType, extension, kind);
const nextIndex = kind === "image" ? downloadedImages + 1 : downloadedVideos + 1;
const dirName = kind === "image" ? "imgs" : "videos";
const targetDir = path.join(markdownDir, dirName);
await mkdir(targetDir, { recursive: true });
const fileName = buildFileName(kind, nextIndex, sourceUrl, outputExtension);
const absolutePath = path.join(targetDir, fileName);
const relativePath = path.posix.join(dirName, fileName);
const bytes = Buffer.from(await response.arrayBuffer());
await writeFile(absolutePath, bytes);
replacements.set(candidate.url, relativePath);
if (kind === "image") {
downloadedImages = nextIndex;
} else {
downloadedVideos = nextIndex;
}
} catch (error) {
const message = error instanceof Error ? error.message : String(error ?? "");
log(`[url-to-markdown] Failed to download media ${candidate.url}: ${message}`);
}
}
return {
markdown: rewriteMarkdownMediaLinks(markdown, replacements),
downloadedImages,
downloadedVideos,
imageDir: downloadedImages > 0 ? path.join(markdownDir, "imgs") : null,
videoDir: downloadedVideos > 0 ? path.join(markdownDir, "videos") : null,
};
}
export function countRemoteMedia(markdown: string): { images: number; videos: number; hasCoverImage: boolean } {
const fmMatch = markdown.match(/^---\n([\s\S]*?)\n---/);
const hasCoverImage = !!(fmMatch?.[1]?.match(FRONTMATTER_COVER_RE)?.[2]);
const candidates = collectMarkdownLinkCandidates(markdown);
let images = 0;
let videos = 0;
for (const c of candidates) {
const ext = resolveExtensionFromUrl(c.url);
const kind = resolveKindFromExtension(ext);
if (kind === "video") {
videos++;
} else if (kind === "image" || c.hint === "image") {
images++;
}
}
return { images, videos, hasCoverImage };
}
+14
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@@ -0,0 +1,14 @@
{
"name": "baoyu-url-to-markdown-scripts",
"private": true,
"type": "module",
"dependencies": {
"@mozilla/readability": "^0.6.0",
"baoyu-chrome-cdp": "file:./vendor/baoyu-chrome-cdp",
"defuddle": "^0.12.0",
"jsdom": "^24.1.3",
"linkedom": "^0.18.12",
"turndown": "^7.2.2",
"turndown-plugin-gfm": "^1.0.2"
}
}
+29
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@@ -0,0 +1,29 @@
import os from "node:os";
import path from "node:path";
import process from "node:process";
const APP_DATA_DIR = "baoyu-skills";
const URL_TO_MARKDOWN_DATA_DIR = "url-to-markdown";
const PROFILE_DIR_NAME = "chrome-profile";
export function resolveUserDataRoot(): string {
if (process.platform === "win32") {
return process.env.APPDATA ?? path.join(os.homedir(), "AppData", "Roaming");
}
if (process.platform === "darwin") {
return path.join(os.homedir(), "Library", "Application Support");
}
return process.env.XDG_DATA_HOME ?? path.join(os.homedir(), ".local", "share");
}
export function resolveUrlToMarkdownDataDir(): string {
const override = process.env.URL_DATA_DIR?.trim();
if (override) return path.resolve(override);
return path.join(process.cwd(), URL_TO_MARKDOWN_DATA_DIR);
}
export function resolveUrlToMarkdownChromeProfileDir(): string {
const override = process.env.BAOYU_CHROME_PROFILE_DIR?.trim() || process.env.URL_CHROME_PROFILE_DIR?.trim();
if (override) return path.resolve(override);
return path.join(resolveUserDataRoot(), APP_DATA_DIR, PROFILE_DIR_NAME);
}
@@ -0,0 +1,9 @@
{
"name": "baoyu-chrome-cdp",
"private": true,
"version": "0.1.0",
"type": "module",
"exports": {
".": "./src/index.ts"
}
}
@@ -0,0 +1,307 @@
import assert from "node:assert/strict";
import { spawn, type ChildProcess } from "node:child_process";
import fs from "node:fs/promises";
import http from "node:http";
import os from "node:os";
import path from "node:path";
import process from "node:process";
import test, { type TestContext } from "node:test";
import {
discoverRunningChromeDebugPort,
findChromeExecutable,
findExistingChromeDebugPort,
getFreePort,
openPageSession,
resolveSharedChromeProfileDir,
waitForChromeDebugPort,
} from "./index.ts";
function useEnv(
t: TestContext,
values: Record<string, string | null>,
): void {
const previous = new Map<string, string | undefined>();
for (const [key, value] of Object.entries(values)) {
previous.set(key, process.env[key]);
if (value == null) {
delete process.env[key];
} else {
process.env[key] = value;
}
}
t.after(() => {
for (const [key, value] of previous.entries()) {
if (value == null) {
delete process.env[key];
} else {
process.env[key] = value;
}
}
});
}
async function makeTempDir(prefix: string): Promise<string> {
return fs.mkdtemp(path.join(os.tmpdir(), prefix));
}
async function startDebugServer(port: number): Promise<http.Server> {
const server = http.createServer((req, res) => {
if (req.url === "/json/version") {
res.writeHead(200, { "Content-Type": "application/json" });
res.end(JSON.stringify({
webSocketDebuggerUrl: `ws://127.0.0.1:${port}/devtools/browser/demo`,
}));
return;
}
res.writeHead(404);
res.end();
});
await new Promise<void>((resolve, reject) => {
server.once("error", reject);
server.listen(port, "127.0.0.1", () => resolve());
});
return server;
}
async function closeServer(server: http.Server): Promise<void> {
await new Promise<void>((resolve, reject) => {
server.close((error) => {
if (error) reject(error);
else resolve();
});
});
}
function shellPathForPlatform(): string | null {
if (process.platform === "win32") return null;
return "/bin/bash";
}
async function startFakeChromiumProcess(port: number): Promise<ChildProcess | null> {
const shell = shellPathForPlatform();
if (!shell) return null;
const child = spawn(
shell,
[
"-lc",
`exec -a chromium-mock ${JSON.stringify(process.execPath)} -e 'setInterval(() => {}, 1000)' -- --remote-debugging-port=${port}`,
],
{ stdio: "ignore" },
);
await new Promise((resolve) => setTimeout(resolve, 250));
return child;
}
async function stopProcess(child: ChildProcess | null): Promise<void> {
if (!child) return;
if (child.exitCode !== null || child.signalCode !== null) return;
child.kill("SIGTERM");
await new Promise((resolve) => setTimeout(resolve, 100));
if (child.exitCode === null && child.signalCode === null) child.kill("SIGKILL");
if (child.exitCode !== null || child.signalCode !== null) return;
await new Promise((resolve) => child.once("exit", resolve));
}
test("getFreePort honors a fixed environment override and otherwise allocates a TCP port", async (t) => {
useEnv(t, { TEST_FIXED_PORT: "45678" });
assert.equal(await getFreePort("TEST_FIXED_PORT"), 45678);
const dynamicPort = await getFreePort();
assert.ok(Number.isInteger(dynamicPort));
assert.ok(dynamicPort > 0);
});
test("findChromeExecutable prefers env overrides and falls back to candidate paths", async (t) => {
const root = await makeTempDir("baoyu-chrome-bin-");
t.after(() => fs.rm(root, { recursive: true, force: true }));
const envChrome = path.join(root, "env-chrome");
const fallbackChrome = path.join(root, "fallback-chrome");
await fs.writeFile(envChrome, "");
await fs.writeFile(fallbackChrome, "");
useEnv(t, { BAOYU_CHROME_PATH: envChrome });
assert.equal(
findChromeExecutable({
envNames: ["BAOYU_CHROME_PATH"],
candidates: { default: [fallbackChrome] },
}),
envChrome,
);
useEnv(t, { BAOYU_CHROME_PATH: null });
assert.equal(
findChromeExecutable({
envNames: ["BAOYU_CHROME_PATH"],
candidates: { default: [fallbackChrome] },
}),
fallbackChrome,
);
});
test("resolveSharedChromeProfileDir supports env overrides, WSL paths, and default suffixes", (t) => {
useEnv(t, { BAOYU_SHARED_PROFILE: "/tmp/custom-profile" });
assert.equal(
resolveSharedChromeProfileDir({
envNames: ["BAOYU_SHARED_PROFILE"],
appDataDirName: "demo-app",
profileDirName: "demo-profile",
}),
path.resolve("/tmp/custom-profile"),
);
useEnv(t, { BAOYU_SHARED_PROFILE: null });
assert.equal(
resolveSharedChromeProfileDir({
wslWindowsHome: "/mnt/c/Users/demo",
appDataDirName: "demo-app",
profileDirName: "demo-profile",
}),
path.join("/mnt/c/Users/demo", ".local", "share", "demo-app", "demo-profile"),
);
const fallback = resolveSharedChromeProfileDir({
appDataDirName: "demo-app",
profileDirName: "demo-profile",
});
assert.match(fallback, /demo-app[\\/]demo-profile$/);
});
test("findExistingChromeDebugPort reads DevToolsActivePort and validates it against a live endpoint", async (t) => {
const root = await makeTempDir("baoyu-cdp-profile-");
t.after(() => fs.rm(root, { recursive: true, force: true }));
const port = await getFreePort();
const server = await startDebugServer(port);
t.after(() => closeServer(server));
await fs.writeFile(path.join(root, "DevToolsActivePort"), `${port}\n/devtools/browser/demo\n`);
const found = await findExistingChromeDebugPort({ profileDir: root, timeoutMs: 1000 });
assert.equal(found, port);
});
test("discoverRunningChromeDebugPort reads DevToolsActivePort from the provided user-data dir", async (t) => {
const root = await makeTempDir("baoyu-cdp-user-data-");
t.after(() => fs.rm(root, { recursive: true, force: true }));
const port = await getFreePort();
const server = await startDebugServer(port);
t.after(() => closeServer(server));
await fs.writeFile(path.join(root, "DevToolsActivePort"), `${port}\n/devtools/browser/demo\n`);
const found = await discoverRunningChromeDebugPort({
userDataDirs: [root],
timeoutMs: 1000,
});
assert.deepEqual(found, {
port,
wsUrl: `ws://127.0.0.1:${port}/devtools/browser/demo`,
});
});
test("discoverRunningChromeDebugPort ignores unrelated debugging processes", async (t) => {
if (process.platform === "win32") {
t.skip("Process discovery fallback is not used on Windows.");
return;
}
const root = await makeTempDir("baoyu-cdp-user-data-");
t.after(() => fs.rm(root, { recursive: true, force: true }));
const port = await getFreePort();
const server = await startDebugServer(port);
t.after(() => closeServer(server));
const fakeChromium = await startFakeChromiumProcess(port);
t.after(async () => { await stopProcess(fakeChromium); });
const found = await discoverRunningChromeDebugPort({
userDataDirs: [root],
timeoutMs: 1000,
});
assert.equal(found, null);
});
test("openPageSession reports whether it created a new target", async () => {
const calls: string[] = [];
const cdpExisting = {
send: async <T>(method: string): Promise<T> => {
calls.push(method);
if (method === "Target.getTargets") {
return {
targetInfos: [{ targetId: "existing-target", type: "page", url: "https://gemini.google.com/app" }],
} as T;
}
if (method === "Target.attachToTarget") return { sessionId: "session-existing" } as T;
throw new Error(`Unexpected method: ${method}`);
},
};
const existing = await openPageSession({
cdp: cdpExisting as never,
reusing: false,
url: "https://gemini.google.com/app",
matchTarget: (target) => target.url.includes("gemini.google.com"),
activateTarget: false,
});
assert.deepEqual(existing, {
sessionId: "session-existing",
targetId: "existing-target",
createdTarget: false,
});
assert.deepEqual(calls, ["Target.getTargets", "Target.attachToTarget"]);
const createCalls: string[] = [];
const cdpCreated = {
send: async <T>(method: string): Promise<T> => {
createCalls.push(method);
if (method === "Target.getTargets") return { targetInfos: [] } as T;
if (method === "Target.createTarget") return { targetId: "created-target" } as T;
if (method === "Target.attachToTarget") return { sessionId: "session-created" } as T;
throw new Error(`Unexpected method: ${method}`);
},
};
const created = await openPageSession({
cdp: cdpCreated as never,
reusing: false,
url: "https://gemini.google.com/app",
matchTarget: (target) => target.url.includes("gemini.google.com"),
activateTarget: false,
});
assert.deepEqual(created, {
sessionId: "session-created",
targetId: "created-target",
createdTarget: true,
});
assert.deepEqual(createCalls, ["Target.getTargets", "Target.createTarget", "Target.attachToTarget"]);
});
test("waitForChromeDebugPort retries until the debug endpoint becomes available", async (t) => {
const port = await getFreePort();
const serverPromise = (async () => {
await new Promise((resolve) => setTimeout(resolve, 200));
const server = await startDebugServer(port);
t.after(() => closeServer(server));
})();
const websocketUrl = await waitForChromeDebugPort(port, 4000, {
includeLastError: true,
});
await serverPromise;
assert.equal(websocketUrl, `ws://127.0.0.1:${port}/devtools/browser/demo`);
});
@@ -0,0 +1,523 @@
import { spawn, spawnSync, type ChildProcess } from "node:child_process";
import fs from "node:fs";
import net from "node:net";
import os from "node:os";
import path from "node:path";
import process from "node:process";
export type PlatformCandidates = {
darwin?: string[];
win32?: string[];
default: string[];
};
type PendingRequest = {
resolve: (value: unknown) => void;
reject: (error: Error) => void;
timer: ReturnType<typeof setTimeout> | null;
};
type CdpSendOptions = {
sessionId?: string;
timeoutMs?: number;
};
type FetchJsonOptions = {
timeoutMs?: number;
};
type FindChromeExecutableOptions = {
candidates: PlatformCandidates;
envNames?: string[];
};
type ResolveSharedChromeProfileDirOptions = {
envNames?: string[];
appDataDirName?: string;
profileDirName?: string;
wslWindowsHome?: string | null;
};
type FindExistingChromeDebugPortOptions = {
profileDir: string;
timeoutMs?: number;
};
export type ChromeChannel = "stable" | "beta" | "canary" | "dev";
export type DiscoveredChrome = {
port: number;
wsUrl: string;
};
type DiscoverRunningChromeOptions = {
channels?: ChromeChannel[];
userDataDirs?: string[];
timeoutMs?: number;
};
type LaunchChromeOptions = {
chromePath: string;
profileDir: string;
port: number;
url?: string;
headless?: boolean;
extraArgs?: string[];
};
type ChromeTargetInfo = {
targetId: string;
url: string;
type: string;
};
type OpenPageSessionOptions = {
cdp: CdpConnection;
reusing: boolean;
url: string;
matchTarget: (target: ChromeTargetInfo) => boolean;
enablePage?: boolean;
enableRuntime?: boolean;
enableDom?: boolean;
enableNetwork?: boolean;
activateTarget?: boolean;
};
export type PageSession = {
sessionId: string;
targetId: string;
createdTarget: boolean;
};
export function sleep(ms: number): Promise<void> {
return new Promise((resolve) => setTimeout(resolve, ms));
}
export async function getFreePort(fixedEnvName?: string): Promise<number> {
const fixed = fixedEnvName ? Number.parseInt(process.env[fixedEnvName] ?? "", 10) : NaN;
if (Number.isInteger(fixed) && fixed > 0) return fixed;
return await new Promise((resolve, reject) => {
const server = net.createServer();
server.unref();
server.on("error", reject);
server.listen(0, "127.0.0.1", () => {
const address = server.address();
if (!address || typeof address === "string") {
server.close(() => reject(new Error("Unable to allocate a free TCP port.")));
return;
}
const port = address.port;
server.close((err) => {
if (err) reject(err);
else resolve(port);
});
});
});
}
export function findChromeExecutable(options: FindChromeExecutableOptions): string | undefined {
for (const envName of options.envNames ?? []) {
const override = process.env[envName]?.trim();
if (override && fs.existsSync(override)) return override;
}
const candidates = process.platform === "darwin"
? options.candidates.darwin ?? options.candidates.default
: process.platform === "win32"
? options.candidates.win32 ?? options.candidates.default
: options.candidates.default;
for (const candidate of candidates) {
if (fs.existsSync(candidate)) return candidate;
}
return undefined;
}
export function resolveSharedChromeProfileDir(options: ResolveSharedChromeProfileDirOptions = {}): string {
for (const envName of options.envNames ?? []) {
const override = process.env[envName]?.trim();
if (override) return path.resolve(override);
}
const appDataDirName = options.appDataDirName ?? "baoyu-skills";
const profileDirName = options.profileDirName ?? "chrome-profile";
if (options.wslWindowsHome) {
return path.join(options.wslWindowsHome, ".local", "share", appDataDirName, profileDirName);
}
const base = process.platform === "darwin"
? path.join(os.homedir(), "Library", "Application Support")
: process.platform === "win32"
? (process.env.APPDATA ?? path.join(os.homedir(), "AppData", "Roaming"))
: (process.env.XDG_DATA_HOME ?? path.join(os.homedir(), ".local", "share"));
return path.join(base, appDataDirName, profileDirName);
}
async function fetchWithTimeout(url: string, timeoutMs?: number): Promise<Response> {
if (!timeoutMs || timeoutMs <= 0) return await fetch(url, { redirect: "follow" });
const ctl = new AbortController();
const timer = setTimeout(() => ctl.abort(), timeoutMs);
try {
return await fetch(url, { redirect: "follow", signal: ctl.signal });
} finally {
clearTimeout(timer);
}
}
async function fetchJson<T = unknown>(url: string, options: FetchJsonOptions = {}): Promise<T> {
const response = await fetchWithTimeout(url, options.timeoutMs);
if (!response.ok) {
throw new Error(`Request failed: ${response.status} ${response.statusText}`);
}
return await response.json() as T;
}
async function isDebugPortReady(port: number, timeoutMs = 3_000): Promise<boolean> {
try {
const version = await fetchJson<{ webSocketDebuggerUrl?: string }>(
`http://127.0.0.1:${port}/json/version`,
{ timeoutMs }
);
return !!version.webSocketDebuggerUrl;
} catch {
return false;
}
}
function isPortListening(port: number, timeoutMs = 3_000): Promise<boolean> {
return new Promise((resolve) => {
const socket = new net.Socket();
const timer = setTimeout(() => { socket.destroy(); resolve(false); }, timeoutMs);
socket.once("connect", () => { clearTimeout(timer); socket.destroy(); resolve(true); });
socket.once("error", () => { clearTimeout(timer); resolve(false); });
socket.connect(port, "127.0.0.1");
});
}
function parseDevToolsActivePort(filePath: string): { port: number; wsPath: string } | null {
try {
const content = fs.readFileSync(filePath, "utf-8");
const lines = content.split(/\r?\n/);
const port = Number.parseInt(lines[0]?.trim() ?? "", 10);
const wsPath = lines[1]?.trim();
if (port > 0 && wsPath) return { port, wsPath };
} catch {}
return null;
}
export async function findExistingChromeDebugPort(options: FindExistingChromeDebugPortOptions): Promise<number | null> {
const timeoutMs = options.timeoutMs ?? 3_000;
const parsed = parseDevToolsActivePort(path.join(options.profileDir, "DevToolsActivePort"));
if (parsed && parsed.port > 0 && await isDebugPortReady(parsed.port, timeoutMs)) return parsed.port;
if (process.platform === "win32") return null;
try {
const result = spawnSync("ps", ["aux"], { encoding: "utf-8", timeout: 5_000 });
if (result.status !== 0 || !result.stdout) return null;
const lines = result.stdout
.split("\n")
.filter((line) => line.includes(options.profileDir) && line.includes("--remote-debugging-port="));
for (const line of lines) {
const portMatch = line.match(/--remote-debugging-port=(\d+)/);
const port = Number.parseInt(portMatch?.[1] ?? "", 10);
if (port > 0 && await isDebugPortReady(port, timeoutMs)) return port;
}
} catch {}
return null;
}
export function getDefaultChromeUserDataDirs(channels: ChromeChannel[] = ["stable"]): string[] {
const home = os.homedir();
const dirs: string[] = [];
const channelDirs: Record<string, { darwin: string; linux: string; win32: string }> = {
stable: {
darwin: path.join(home, "Library", "Application Support", "Google", "Chrome"),
linux: path.join(home, ".config", "google-chrome"),
win32: path.join(process.env.LOCALAPPDATA ?? path.join(home, "AppData", "Local"), "Google", "Chrome", "User Data"),
},
beta: {
darwin: path.join(home, "Library", "Application Support", "Google", "Chrome Beta"),
linux: path.join(home, ".config", "google-chrome-beta"),
win32: path.join(process.env.LOCALAPPDATA ?? path.join(home, "AppData", "Local"), "Google", "Chrome Beta", "User Data"),
},
canary: {
darwin: path.join(home, "Library", "Application Support", "Google", "Chrome Canary"),
linux: path.join(home, ".config", "google-chrome-canary"),
win32: path.join(process.env.LOCALAPPDATA ?? path.join(home, "AppData", "Local"), "Google", "Chrome SxS", "User Data"),
},
dev: {
darwin: path.join(home, "Library", "Application Support", "Google", "Chrome Dev"),
linux: path.join(home, ".config", "google-chrome-dev"),
win32: path.join(process.env.LOCALAPPDATA ?? path.join(home, "AppData", "Local"), "Google", "Chrome Dev", "User Data"),
},
};
const platform = process.platform === "darwin" ? "darwin" : process.platform === "win32" ? "win32" : "linux";
for (const ch of channels) {
const entry = channelDirs[ch];
if (entry) dirs.push(entry[platform]);
}
return dirs;
}
// Best-effort reuse of an already-running local CDP session discovered from
// known Chrome user-data dirs. This is distinct from Chrome DevTools MCP's
// prompt-based --autoConnect flow.
export async function discoverRunningChromeDebugPort(options: DiscoverRunningChromeOptions = {}): Promise<DiscoveredChrome | null> {
const channels = options.channels ?? ["stable", "beta", "canary", "dev"];
const timeoutMs = options.timeoutMs ?? 3_000;
const userDataDirs = (options.userDataDirs ?? getDefaultChromeUserDataDirs(channels))
.map((dir) => path.resolve(dir));
for (const dir of userDataDirs) {
const parsed = parseDevToolsActivePort(path.join(dir, "DevToolsActivePort"));
if (!parsed) continue;
if (await isPortListening(parsed.port, timeoutMs)) {
return { port: parsed.port, wsUrl: `ws://127.0.0.1:${parsed.port}${parsed.wsPath}` };
}
}
if (process.platform !== "win32") {
try {
const result = spawnSync("ps", ["aux"], { encoding: "utf-8", timeout: 5_000 });
if (result.status === 0 && result.stdout) {
const lines = result.stdout
.split("\n")
.filter((line) =>
line.includes("--remote-debugging-port=") &&
userDataDirs.some((dir) => line.includes(dir))
);
for (const line of lines) {
const portMatch = line.match(/--remote-debugging-port=(\d+)/);
const port = Number.parseInt(portMatch?.[1] ?? "", 10);
if (port > 0 && await isDebugPortReady(port, timeoutMs)) {
try {
const version = await fetchJson<{ webSocketDebuggerUrl?: string }>(`http://127.0.0.1:${port}/json/version`, { timeoutMs });
if (version.webSocketDebuggerUrl) return { port, wsUrl: version.webSocketDebuggerUrl };
} catch {}
}
}
}
} catch {}
}
return null;
}
export async function waitForChromeDebugPort(
port: number,
timeoutMs: number,
options?: { includeLastError?: boolean }
): Promise<string> {
const start = Date.now();
let lastError: unknown = null;
while (Date.now() - start < timeoutMs) {
try {
const version = await fetchJson<{ webSocketDebuggerUrl?: string }>(
`http://127.0.0.1:${port}/json/version`,
{ timeoutMs: 5_000 }
);
if (version.webSocketDebuggerUrl) return version.webSocketDebuggerUrl;
lastError = new Error("Missing webSocketDebuggerUrl");
} catch (error) {
lastError = error;
}
await sleep(200);
}
if (options?.includeLastError && lastError) {
throw new Error(
`Chrome debug port not ready: ${lastError instanceof Error ? lastError.message : String(lastError)}`
);
}
throw new Error("Chrome debug port not ready");
}
export class CdpConnection {
private ws: WebSocket;
private nextId = 0;
private pending = new Map<number, PendingRequest>();
private eventHandlers = new Map<string, Set<(params: unknown) => void>>();
private defaultTimeoutMs: number;
private constructor(ws: WebSocket, defaultTimeoutMs = 15_000) {
this.ws = ws;
this.defaultTimeoutMs = defaultTimeoutMs;
this.ws.addEventListener("message", (event) => {
try {
const data = typeof event.data === "string"
? event.data
: new TextDecoder().decode(event.data as ArrayBuffer);
const msg = JSON.parse(data) as {
id?: number;
method?: string;
params?: unknown;
result?: unknown;
error?: { message?: string };
};
if (msg.method) {
const handlers = this.eventHandlers.get(msg.method);
if (handlers) {
handlers.forEach((handler) => handler(msg.params));
}
}
if (msg.id) {
const pending = this.pending.get(msg.id);
if (pending) {
this.pending.delete(msg.id);
if (pending.timer) clearTimeout(pending.timer);
if (msg.error?.message) pending.reject(new Error(msg.error.message));
else pending.resolve(msg.result);
}
}
} catch {}
});
this.ws.addEventListener("close", () => {
for (const [id, pending] of this.pending.entries()) {
this.pending.delete(id);
if (pending.timer) clearTimeout(pending.timer);
pending.reject(new Error("CDP connection closed."));
}
});
}
static async connect(
url: string,
timeoutMs: number,
options?: { defaultTimeoutMs?: number }
): Promise<CdpConnection> {
const ws = new WebSocket(url);
await new Promise<void>((resolve, reject) => {
const timer = setTimeout(() => reject(new Error("CDP connection timeout.")), timeoutMs);
ws.addEventListener("open", () => {
clearTimeout(timer);
resolve();
});
ws.addEventListener("error", () => {
clearTimeout(timer);
reject(new Error("CDP connection failed."));
});
});
return new CdpConnection(ws, options?.defaultTimeoutMs ?? 15_000);
}
on(method: string, handler: (params: unknown) => void): void {
if (!this.eventHandlers.has(method)) {
this.eventHandlers.set(method, new Set());
}
this.eventHandlers.get(method)?.add(handler);
}
off(method: string, handler: (params: unknown) => void): void {
this.eventHandlers.get(method)?.delete(handler);
}
async send<T = unknown>(method: string, params?: Record<string, unknown>, options?: CdpSendOptions): Promise<T> {
const id = ++this.nextId;
const message: Record<string, unknown> = { id, method };
if (params) message.params = params;
if (options?.sessionId) message.sessionId = options.sessionId;
const timeoutMs = options?.timeoutMs ?? this.defaultTimeoutMs;
const result = await new Promise<unknown>((resolve, reject) => {
const timer = timeoutMs > 0
? setTimeout(() => {
this.pending.delete(id);
reject(new Error(`CDP timeout: ${method}`));
}, timeoutMs)
: null;
this.pending.set(id, { resolve, reject, timer });
this.ws.send(JSON.stringify(message));
});
return result as T;
}
close(): void {
try {
this.ws.close();
} catch {}
}
}
export async function launchChrome(options: LaunchChromeOptions): Promise<ChildProcess> {
await fs.promises.mkdir(options.profileDir, { recursive: true });
const args = [
`--remote-debugging-port=${options.port}`,
`--user-data-dir=${options.profileDir}`,
"--no-first-run",
"--no-default-browser-check",
...(options.extraArgs ?? []),
];
if (options.headless) args.push("--headless=new");
if (options.url) args.push(options.url);
return spawn(options.chromePath, args, { stdio: "ignore" });
}
export function killChrome(chrome: ChildProcess): void {
try {
chrome.kill("SIGTERM");
} catch {}
setTimeout(() => {
if (!chrome.killed) {
try {
chrome.kill("SIGKILL");
} catch {}
}
}, 2_000).unref?.();
}
export async function openPageSession(options: OpenPageSessionOptions): Promise<PageSession> {
let targetId: string;
let createdTarget = false;
if (options.reusing) {
const created = await options.cdp.send<{ targetId: string }>("Target.createTarget", { url: options.url });
targetId = created.targetId;
createdTarget = true;
} else {
const targets = await options.cdp.send<{ targetInfos: ChromeTargetInfo[] }>("Target.getTargets");
const existing = targets.targetInfos.find(options.matchTarget);
if (existing) {
targetId = existing.targetId;
} else {
const created = await options.cdp.send<{ targetId: string }>("Target.createTarget", { url: options.url });
targetId = created.targetId;
createdTarget = true;
}
}
const { sessionId } = await options.cdp.send<{ sessionId: string }>(
"Target.attachToTarget",
{ targetId, flatten: true }
);
if (options.activateTarget ?? true) {
await options.cdp.send("Target.activateTarget", { targetId });
}
if (options.enablePage) await options.cdp.send("Page.enable", {}, { sessionId });
if (options.enableRuntime) await options.cdp.send("Runtime.enable", {}, { sessionId });
if (options.enableDom) await options.cdp.send("DOM.enable", {}, { sessionId });
if (options.enableNetwork) await options.cdp.send("Network.enable", {}, { sessionId });
return { sessionId, targetId, createdTarget };
}
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---
name: youtube-transcript
description: Extract transcripts from YouTube videos. Use when the user asks for a transcript, subtitles, or captions of a YouTube video and provides a YouTube URL (youtube.com/watch?v=, youtu.be/, or similar). Supports output with or without timestamps.
---
# YouTube Transcript
Extract transcripts from YouTube videos using the youtube-transcript-api.
## Usage
Run the script with a YouTube URL or video ID:
```bash
uv run scripts/get_transcript.py "VIDEO_URL_OR_ID"
```
With timestamps:
```bash
uv run scripts/get_transcript.py "VIDEO_URL_OR_ID" --timestamps
```
## Defaults
- **Without timestamps** (default): Plain text, one line per caption segment
- **With timestamps**: `[MM:SS] text` format (or `[HH:MM:SS]` for longer videos)
## Supported URL Formats
- `https://www.youtube.com/watch?v=VIDEO_ID`
- `https://youtu.be/VIDEO_ID`
- `https://youtube.com/embed/VIDEO_ID`
- Raw video ID (11 characters)
## Output
- CRITICAL: YOU MUST NEVER MODIFY THE RETURNED TRANSCRIPT
- If the transcript is without timestamps, you SHOULD clean it up so that it is arranged by complete paragraphs and the lines don't cut in the middle of sentences.
- If you were asked to save the transcript to a specific file, save it to the requested file.
- If no output file was specified, use the YouTube video ID with a `-transcript.txt` suffix.
## Notes
- Fetches auto-generated or manually added captions (whichever is available)
- Requires the video to have captions enabled
- Falls back to auto-generated captions if manual ones aren't available
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#!/usr/bin/env -S uv run --script
# /// script
# requires-python = ">=3.10"
# dependencies = ["youtube-transcript-api>=1.0.0"]
# ///
"""
Extract transcript from a YouTube video.
Usage:
uv run scripts/get_transcript.py <video_id_or_url> [--timestamps]
"""
import sys
import re
import argparse
from youtube_transcript_api import YouTubeTranscriptApi
def extract_video_id(url_or_id: str) -> str:
"""Extract video ID from various YouTube URL formats or return as-is if already an ID."""
patterns = [
r'(?:youtube\.com/watch\?v=|youtu\.be/|youtube\.com/embed/|youtube\.com/v/)([a-zA-Z0-9_-]{11})',
r'^([a-zA-Z0-9_-]{11})$'
]
for pattern in patterns:
match = re.search(pattern, url_or_id)
if match:
return match.group(1)
raise ValueError(f"Could not extract video ID from: {url_or_id}")
def format_timestamp(seconds: float) -> str:
"""Convert seconds to HH:MM:SS or MM:SS format."""
hours = int(seconds // 3600)
minutes = int((seconds % 3600) // 60)
secs = int(seconds % 60)
if hours > 0:
return f"{hours:02d}:{minutes:02d}:{secs:02d}"
return f"{minutes:02d}:{secs:02d}"
def get_transcript(video_id: str, with_timestamps: bool = False) -> str:
"""Fetch and format transcript for a YouTube video."""
api = YouTubeTranscriptApi()
transcript = api.fetch(video_id)
if with_timestamps:
lines = [f"[{format_timestamp(snippet.start)}] {snippet.text}" for snippet in transcript.snippets]
else:
lines = [snippet.text for snippet in transcript.snippets]
return '\n'.join(lines)
def main():
parser = argparse.ArgumentParser(description='Get YouTube video transcript')
parser.add_argument('video', help='YouTube video URL or video ID')
parser.add_argument('--timestamps', '-t', action='store_true',
help='Include timestamps in output')
args = parser.parse_args()
try:
video_id = extract_video_id(args.video)
transcript = get_transcript(video_id, with_timestamps=args.timestamps)
print(transcript)
except Exception as e:
print(f"Error: {e}", file=sys.stderr)
sys.exit(1)
if __name__ == '__main__':
main()