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deepmind.google·6d ago
AI Engineering
Hacker News·Jun 14·5 min read
Show HN: Kage – Shadow any website to a single binary for offline viewing
TL;DR
Many users struggle to save web pages for offline viewing, often ending up with unusable copies due to reliance on external scripts. Kage is a tool that clones websites into a local folder, capturing the visual content while removing all JavaScript.
✦ Why It Matters
Engineers can use Kage to create reliable offline versions of web pages for documentation or archiving purposes.
Key Takeaways
- Use Kage to save web pages for offline access.
- Ensure saved pages are fully functional without external scripts.
- Capture the visual content of websites accurately.
- Organize resources into a local folder structure.
Full Summary
Web pages saved locally often become unusable within months due to broken JavaScript dependencies, missing external resources, and broken analytics calls—users lack true ownership of downloaded content. Kage is a command-line tool that converts websites into self-contained, fully functional offline archives by rendering pages in headless Chrome, capturing the post-JavaScript DOM state, and stripping all executable code while preserving CSS, images, and fonts with local paths.
The tool opens each page in a headless browser, waits for dynamic content to settle, snapshots the rendered DOM that a human would see, removes all JavaScript, and rewrites resource references to point to locally cached files. The result is a static HTML archive that visually matches the live site without executing any code or making external requests.
Engineers can use Kage to create reliable offline documentation, preserve web content for archival purposes, or distribute websites as single binaries without runtime dependencies.