What is a browser profile?

A browser profile is an isolated browsing environment with its own cookies, local storage, cache, bookmarks, extensions, and browsing history. In anti-detect browsers, each profile also has its own unique fingerprint — screen resolution, fonts, WebGL output, canvas hash, and dozens of other attributes. Profiles ensure that activity in one profile cannot be linked to activity in another. Each profile appears as a completely different user on a completely different device. Native browser profiles (Chrome, Firefox) share the same fingerprint across profiles — they only isolate cookies and history. Anti-detect browser profiles isolate everything, including hardware-level signals. Use profiles for: managing multiple accounts per platform, testing websites from different perspectives, separating work and personal browsing, and isolating client accounts in agency settings.