cutetailbud/ff-ruyijs

Run any site JavaScript from Python with the real Firefox engine. Headless SpiderMonkey + Necko for automation and scraping.

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A new-generation, minimalist browser purpose-built for AI-driven automation. The authentic Firefox JavaScript engine and networking stack, with no window and no renderer — made for web scraping, JS reverse engineering, data collection, and getting past bot checks. [](https://pypi.org/project/ruyijs/) [](https://pypi.org/project/ruyijs/) [](LICENSE) [](https://pypi.org/project/ruyijs/) [](https://linux.do/t/topic/3078486) Sponsored by Contributors    Install  ·  Features  ·  Verification systems  ·  Examples  ·  FAQ  ·  Contact  ·  LinuxDO  ·  English · 简体中文 Headless Chrome and Playwright hand you a whole browser: a GPU-rendering, window-managing, memory-hungry process that anti-bot vendors have spent years learning to detect. ruyiJS takes the opposite path — it embeds only the Firefox internals that matter for automation and leaves the rest behind: If you scrape, reverse-engineer web JavaScript, or collect data behind a challenge, it's for you. If a plain HTTP client already gets your pages, you don't need it. Windows x64 ships as a wheel with Python 3.10+ (verified on Python 3.14). macOS…

cutetailbud/ff-ruyijs on GitHub A short preview, not the full document.

Read the full README ↗ · Preview checked 2026-10-31T12:46:21.194Z

Inside the original README — Document outline
  1. 🦊 ruyiJS
  2. Run any site's JavaScript from Python — with the real Firefox engine.
  3. Is ruyiJS for you?
  4. 📦 Installation
  5. 🚀 Quick start
  6. 🏗️ How it fits together
  7. ✨ Features
  8. Run a site's JavaScript
  9. Configure the browser environment
  10. Native network over Necko
  11. Native TLS fingerprint — switchable across Firefox 100 – 159
  12. Canvas on Firefox's native Skia

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Documentation belongs to its respective authors. Reported project/model license: AGPL-3.0. A listing is not a grant of reuse or training rights. Confirm the document’s own terms at the source.

What this repository does

Run any site JavaScript from Python with the real Firefox engine. Headless SpiderMonkey + Necko for automation and scraping.

Repository facts

Owner
cutetailbud
Primary language
C++
Stars
376
Forks
241
Open issues + pull requests
3
License
AGPL-3.0
Archived
No
Default branch
main
Created
2026-10-28T11:31:41.000Z
Last push
2026-11-01T12:00:58.000Z

Topics and intended use

Owner-supplied topics: anti-bot, automation, firefox, headless-browser, javascript, python, spidermonkey, web-scraping

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Source: GitHub. Metadata observed 2026-11-01T12:17:46.653Z. Daily imports are snapshots, not real-time monitoring.

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