Show HN: Cpdown – Copy any webpage/YouTube subtitle as clean Markdown(LLM-ready)

4 months ago 28

Copy any webpage as clean markdown.

cpdown is a browser extension that allows you to copy the content of any webpage as clean, formatted markdown. If you're on YouTube, you can also copy the subtitle as markdown.

Cap.2025-05-21.at.17.13.06.mp4

📋 Copy any webpage content as clean markdown with one click (or keyboard shortcut)
📋 Copy YouTube subtitle as clean markdown with one click (or keyboard shortcut)
📖 Uses Defuddle or Mozilla's Readability to extract the main content
🔍 Removes unnecessary HTML elements (scripts, styles, iframes, etc.)
🔢 Shows token count for the copied content (for LLM)
⌨️ Keyboard shortcut support (Cmd+Ctrl+T on Mac, Ctrl+Shift+T on Windows/Linux)

Chrome: Chrome Web Store
Firefox: Firefox Add-ons (Coming soon)

Clone this repository
Install dependencies:
Build the extension:
Load the unpacked extension:
- Open Chrome/Edge and navigate to chrome://extensions
- Enable "Developer mode"
- Click "Load unpacked" and select the .output/chrome-mv3 directory

Navigate to any webpage you want to copy
Click the cpdown icon in your browser toolbar, or use the keyboard shortcut
The page content will be copied to your clipboard as markdown
Paste the markdown content anywhere you need it

cpdown offers several configuration options:

Use Defuddle: Use Defuddle to clean up the markdown output
Use Mozilla Readability: Parse webpage content using Readability for cleaner markdown output
Wrap in Triple Backticks: Wrap the copied content in triple backticks for better readability
Show Success Toast: Display a notification when content is successfully copied
Show Raycast Confetti: Celebrate successful copying with a confetti animation (for Raycast users)

This extension is built with: