# Cookies
> Cookies are small browser files sites use to remember you, save settings, or track activity.
Topics: Apps, Security
Difficulty: Everyday
Aliases: browser cookies
Updated: 2026-06-26T08:00:00.000Z
## Go deeper
Cookies are small browser files sites use to remember you, save settings, or track activity. In everyday buying decisions, the useful question is not just what the spec says, but what it changes for comfort, cost, speed, safety, or battery life.