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6. Variables and Procedure Parameters

Tutorial chapter

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Cookie details
Description Vendor Lifetime Type Purpose
_pk_id Matomo 13 Months HTTP Contains a unique, pseudonymized visitor ID internal to Matomo for recognizing returning visitors.
_pk_ref Matomo 6 Months HTTP Used to track from which website the anonymized user proceeded to our website.
_pk_ses Matomo 1 Day HTTP The Matomo session cookie is used to track the visitor's page requests during the session.
_pk_testcookie Matomo Session HTTP Used to check whether the visitor's browser supports cookies.
_pk_cvar Matomo 30 Minutes HTTP Temporarily store data about the visit.
_pk_hsr Matomo 30 Minutes HTTP Temporarily store data about the visit.