Google Analytics is a powerful tool that tracks and analyzes website traffic for informed marketing decisions.
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_gac_
Contains information related to the user's marketing campaigns. These are shared with Google AdWords / Google Ads when Google Ads and Google Analytics accounts are linked together.
90 days
__utma
ID used to identify users and sessions.
2 years after last activity
__utmt
Used to monitor the rate of requests to the Google Analytics server.
10 minutes
__utmb
Used to distinguish new sessions and visits. This cookie is set when the GA.js JavaScript library loads and no existing __utmb cookie is present. The cookie is updated every time data is sent to the Google Analytics server.
30 minutes after last activity
__utmc
Use only with older Google Analytics Urchin versions and not with GA.js. It was used to distinguish between new sessions and visits at the end of a session.
End of session (browser)
__utmz
It contains information about the traffic source or campaign that directed the user to the website. This cookie is set when the GA.js JavaScript script is loaded and is updated when data is sent to the Google Analytics server.
6 months after last activity
__utmv
Contains customized information set by the web developer via the _setCustomVar method in Google Analytics. This cookie is updated every time new data is sent to the Google Analytics server.
2 years after last activity
__utmx
Used to determine if a user is included in an A/B or multivariate test.
18 months
_ga
ID used to identify users.
2 years
_gali
Used by Google Analytics to determine which links on a page are clicked.
30 seconds
_ga_
ID used to identify users.
2 years
_gid
ID used to identify users for 24 hours after their last activity.
24 hours
_gat
Used to monitor the number of requests to the Google Analytics server when using Google Tag Manager.
1 minute
