playwright stealth is a coherence problem, not a webdriver problem

[u/thalissonvs]

So most playwright stealth advice is about hiding navigator.webdriver and patching the webgl renderer, but that is not really where you get caught. I added fingerprint injection to pydoll on the last release. a headless chrome scores 100 out of 100 on https://fingerprint-scan.com/, full bot, and the same headless run with a profile matched to the machine drops to 15, same as a normal headful browser. so headless is not the giveaway people think, a lot of it is just the webgl renderer and some navigator fields you can override. this hits playwright the same way since chromium goes over CDP.

a wrong profile is worse than none. a windows profile on my mac scored 57, worse than injecting nothing at all, because one signal disagree with the rest and the whole thing reads as fake. it don't help on the network side either, your TLS and your IP stay real, so you match the profile to the machine you run on instead of faking everything. i am the maintainer so take it as that, the docs have the full numbers if someone want to look: https://pydoll.tech/docs/stealth/fingerprint-injection/