Detection
Headless Browser
A headless browser is a real browser engine — Chromium, Firefox, or WebKit — running without a visible window or display, used legitimately for automated testing and web scraping, and by bots designed to pass basic JavaScript-execution checks a simple HTTP-only scraper would fail. It leaves technical traces a normal, user-driven browser session doesn't (missing screen/display properties, automation-framework artifacts, contradictory capability checks), which fingerprint-based detection is built to catch.