Implement this detection for `puppeteer-extra-stealth`

[JorianWoltjer]

I noticed that this project doesn't have a checked box next to puppeteer-extra-stealth, and some time ago I found a way to detect it via JavaScript:

function detectHeadless() {
    const iframe = document.createElement('iframe');
    iframe.srcdoc = '';
    return iframe.__lookupGetter__('contentWindow').toString().includes('proxy');
}

I'm not really able to implement this into brotector myself, but someone with experience should be able to do so pretty quickly I imagine. That would make cdp-patches the only undetectable browser from what I can see.

[ttlns]

I noticed that this project doesn't have a checked box next to puppeteer-extra-stealth

Ahh I just haven't tested detection on it haha - I bet it already is being detected.

I found a way to detect it via JavaScript:

function detectHeadless() {
    const iframe = document.createElement('iframe');
    iframe.srcdoc = '';
    return iframe.__lookupGetter__('contentWindow').toString().includes('proxy');
}

Will check this out, thanks!

Edit

Actually, it looks like I have already tested it https://github.com/kaliiiiiiiiii/brotector/blob/master/tests_nodejs/test_puppeteer.mjs

Probably forgot to add the checkmark

[AminDhouib]

@JorianWoltjer @ttlns

If you want to test against something that takes a different approach entirely, our MCP server uses nodriver (CDP-based, no webdriver at all) with automatic stripping of 30+ detectable Chrome flags. It passes Cloudflare Turnstile and fingerprint.com:

captcha-bypass.mp4

Demo on YouTube

Would be interesting to see how brotector handles nodriver-based automation vs puppeteer-extra-stealth.

pip install stealth-chrome-devtools-mcp

https://github.com/DevinoSolutions/stealth-chrome-devtools-mcp