What is the _ga_<container-id> cookie?
Persists session state for a specific GA4 property (the suffix is your Measurement ID). Replaces the old _gid/_gat pair in GA4.
Analytics Needs consent
| Cookie name | _ga_<container-id> |
|---|---|
| Also seen as | _ga_XXXXXXXXXX |
| Set by | Google Analytics 4 |
| Category | Analytics |
| Typical duration | 2 years |
| Domain | first-party |
| Consent required? | Yes — before it is set |
| Seen in our scans | On 2 scanned sites so far |
Does _ga_<container-id> need consent?
Yes. _ga_<container-id> is a analytics cookie, and under the EU ePrivacy rules (and the Irish ePrivacy Regulations) a site must get your prior, informed consent before setting it. If you see _ga_<container-id> on a site before you click "Accept" on a cookie banner — or on a site with no banner at all — that is very likely a compliance problem.
Is _ga_<container-id> a tracking cookie?
Measures how visitors use the site. Requires consent first — "anonymous" or first-party does not exempt it.
In practice that means Google Analytics 4 can recognise your browser so the site owner can measure how you and others use the site. It is not malware and it cannot read files on your device — but it is exactly the kind of cookie consent law is designed to cover.
How to see and remove _ga_<container-id>
- See it: open your browser's developer tools → Application (Chrome/Edge) or Storage (Firefox) → Cookies, and look for
_ga_<container-id>. - Remove it: clear cookies for the site, or use your browser's "Clear browsing data" for cookies. It will reappear if you keep using the site and consent is in place.
- Stop it being set: decline non-essential cookies on the site's banner. On a compliant site, clicking "Reject all" prevents _ga_<container-id> from being set at all.
Want to know which cookies your site sets — and whether any fire before consent? Scan it free and get the full list, categorised, with the ones that load too early flagged.
Fixing pre-consent cookies
If a scan shows _ga_<container-id> or other tracking cookies loading before the visitor consents, the fix is a consent management platform (CMP) that blocks non-essential tags until the visitor agrees. Cookies.ie is our GDPR / ePrivacy CMP — EU-hosted, with a real one-click "Reject all" and consent logging. See the fix guide for pre-consent trackers.
Related cookies
Cookie purposes and durations reflect vendor documentation and common consent databases as of 2026-06-25; a specific site may configure _ga_<container-id> differently. This is general information, not legal advice.