What the _pk_ses. cookie does
Shows the visitor’s active session. If the cookie doesn’t exist, it means that the session ended more than 30 minutes ago and was counted in the _pk_id cookie.
This cookie stores a unique session ID and tracks the visitor's active session for website analytics.
The name ends in a part that changes from visitor to visitor or site to site, so this entry covers every cookie whose name starts with _pk_ses..
Who sets it
Consent category: analytics
Analytics cookies measure how a site is used, in aggregate: pages seen, sessions, where visitors came from. Under the GDPR they need consent before they are set, and Google Consent Mode can model what is lost when visitors decline.
| Name | _pk_ses. |
|---|---|
| Category | Analytics |
| Lifetime | 30 minutes |
| Set by | Piwik, Matomo |
Other cookies from the same vendor
_pk_id.ppms_privacy_ppms_privacy_bar_stg_externalReferrerstg_fired__stg_global_opt_outstg_last_interaction_stg_optout
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.