What the optimizelyEndUserId cookie does
Stores a visitor's unique Optimizely identifier. It's a combination of a timestamp and random number. No other information about you or your visitors is stored inside.
Who sets it
Consent category: marketing
Marketing cookies follow visitors across sites to build advertising profiles and to measure campaigns. They always require prior consent, and a consent banner has to block them until the visitor agrees.
| Name | optimizelyEndUserId |
|---|---|
| Category | Marketing |
| Lifetime | 6 months |
| Set by | Optimizely |
Other cookies from the same vendor
Is this cookie on your site?
A free scan lists every cookie your site sets, classifies each one the way this page does, and shows which are set before the visitor has consented. Scan your site with Conzent, or look up another cookie.
From the Conzent cookie database, last updated 2026-09-27. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.