`_ga…`

Gives your browser a random ID so Google Analytics can tell repeat visits apart. It is how a site counts you as one person across pages.

Owner: Google LLC
Matches: Any cookie whose name starts with _ga
Needed to Work: No. The site works without it.
Confidence: Verified
Source: https://developers.google.com/analytics/devguides/collection/ga4/cookie-usage
Last Reviewed: 2026-09-13

Which Sites

Any site. The name is specific enough to identify this cookie wherever it appears.