Headless browser

A browser running without a visible interface, usually driven by Puppeteer, Playwright, or Selenium.

Headless browsers leave automation artifacts — webdriver flags, framework markers, a navigator surface that disagrees with itself — that the automation-detection category scores. Stealth plugins patch the obvious flags, so detection leans on consistency instead: whether the claimed browser, GPU, fonts, and event timing behave the way that build does on real hardware.

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