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The on_request/on_response Vec lived on the ObscuraHttpClient shared by every page in the context, so a callback registered on one page fired for all pages (#408 cross-page bleed) and outlived its page. Callbacks now live in a per-page CallbackRegistry (Arc shared with the page's JS runtime state). Page-driven fetch paths (navigation, POST, scripts, stylesheets, robots.txt, module loads, JS fetch/XHR in both plain and stealth modes) pass the registry through; the HTTP client itself is callback-free. Adds callbacks_do_not_bleed_across_pages: page A's callback stays silent for page B's requests and stops firing after page A is dropped.
Obscura is an open-source headless browser engine written in Rust. It runs JavaScript via V8, speaks the Chrome DevTools Protocol, and works as a drop-in replacement for headless Chrome with Puppeteer and Playwright.
Versus headless Chrome
| Metric | Obscura | Headless Chrome |
|---|---|---|
| Memory | 30 MB | 200+ MB |
| Binary size | 70 MB | 300+ MB |
| Startup | Instant | ~2s |
| Page load | 85 ms | ~500 ms |
| Anti-detect | Built-in | None |
| Puppeteer | Yes | Yes |
| Playwright | Yes | Yes |
Quickstart
Guides
- Build from source
- Configure stealth and proxies
- Markdown extraction
- Use with Puppeteer
- Use with Playwright
- Use the MCP server
- Use as a Rust library
- Persist cookies and storage
- Intercept and modify requests
- Run in production at scale
Reference
Contributing
Links
- Source: https://github.com/h4ckf0r0day/obscura
- Releases: https://github.com/h4ckf0r0day/obscura/releases
- Issues: https://github.com/h4ckf0r0day/obscura/issues
License: Apache-2.0.