What is Browser Fingerprint?
The combination of details a browser reveals — graphics output, fonts, screen, timezone, language and hardware — that together identify it without cookies.
No single value is unique, but canvas and WebGL rendering, installed fonts, screen metrics, CPU and memory hints, timezone and languages combine into a signature that usually is. Unlike a cookie, it is recomputed on every visit, so clearing storage or opening a private window does not reset it.
Detection systems care as much about consistency as uniqueness. A German IP paired with a US timezone, or a Windows user agent with a macOS font list, is a stronger signal than an ordinary fingerprint shared by millions.
Changing the IP with a proxy leaves the fingerprint untouched. Running several accounts on one machine therefore needs separate browser profiles, each paired with its own proxy.
Related terms
Anti-Detect Browser
Software that creates isolated browser profiles with unique fingerprints, paired with proxies to manage multiple accounts without linking them.
Multi-Accounting
Operating several accounts on a platform, with each account isolated on its own dedicated IP to prevent linking and bans.
Residential Proxy
A proxy that routes traffic through an IP address assigned by an ISP to a real home device, making requests appear to come from a genuine consumer.
CAPTCHA
A challenge designed to tell humans from bots. Clean residential IPs and good request hygiene reduce how often CAPTCHAs are triggered.