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Stealth Chromium engine that stops scrapers and browser agents from getting blocked, with one line of code change.

50 starsPython

Fortress – a stealth Chromium so your agents stop getting blocked

by arhamshahrier·Jul 8, 2026·18 points·11 comments

AI Analysis

●●●BangerWizardryBig BrainSolve My Problem

C++ Chromium patches beat JS-level stealth when puppeteer-extra-plugin-stealth gets detected.

Strengths
  • 34 in-tree C++ patches fix fingerprint at engine level, not JavaScript injection
  • Verifiable gauntlet results: 0% CreepJS headless detection, passes Cloudflare Turnstile
  • Zero code changes needed—existing Playwright/Puppeteer scripts work via CDP
Weaknesses
  • Monthly rebase requirement means tracking Chromium updates is ongoing maintenance burden
  • Building from source requires Chromium build infrastructure, not trivial for most users
Target Audience

Web scrapers, automation engineers, AI agent developers

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puppeteer-extra-plugin-stealth · Bright Data Web Unlocker · ZenRows

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