Glossary · Internet & Web

Incognito Mode (Private Browsing)

Incognito mode is a browser setting that does not save history, cookies or form data after the window closes, though sites and networks can still see activity.

Updated October 6, 2026

Incognito mode, also called private browsing, is a browser window that discards history, cookies and site data when it closes. It starts with no stored cookies, so you appear logged out of most sites.

Why it matters

It is handy for testing how a site looks to a first-time visitor, checking whether a problem comes from cached data or extensions, and using a shared computer. It does not hide your IP address from websites, your employer or your ISP.

Closing every private window ends the session and wipes its cookies, so you can start fresh tests as often as needed.

Example

If a page shows an old design in your normal window but the new one in a private window, the cause is probably the browser cache or a stored cookie rather than the server.

Common misconceptions

  • Believing incognito makes you anonymous online.
  • Assuming extensions run in private windows; most are disabled by default.
  • Testing logged-in features there and forgetting you must sign in again.

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