See how Safari ITP, Firefox ETP, and Chrome restrict your cookie lifespans. Compare across browsers and see how sGTM 1st-party cookies survive all restrictions.
Set via document.cookie in browser (e.g. GA client_id via gtag.js)
| Browser | Requested | Effective | Restriction |
|---|---|---|---|
Safari (ITP) | 365d | 7d | 7 days — ITP 2.1 cap on JS-set cookies |
Firefox (ETP) | 365d | 180d | 180 days — Enhanced Tracking Protection |
Chrome | 365d | 365d | 400 days — Chrome's max cookie age cap |
BESTsGTM (HTTP) | 365d | 365d | 400 days — server-set survives ITP |
sGTM sets 1st-party HTTP cookies from your domain. ITP, ETP, and Chrome caps can't touch them.
