Google Analytics es una potente herramienta que rastrea y analiza el tráfico del sitio web para tomar decisiones de marketing fundamentadas.
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__utmc
It is used only with the older versions of Google Analytics' Urchin and not with GA.js. It was employed to distinguish between new sessions and visits at the end of a session.
End of session (browser)
__utmz
Contains information about the traffic source or campaign that directed the user to the website. The cookie is set when the GA.js JavaScript script is loaded and updated when data is sent to the Google Analytics server.
6 months after last activity
__utmv
Contains personalised information set by the web developer using the _setCustomVar method in Google Analytics. This cookie is updated each time new data is sent to the Google Analytics server.
2 years after last activity
__utmx
It is used to determine whether a user is part of 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 being clicked.
30 seconds
_ga_
ID used to identify users
2 years
_gid
ID used to identify users for 24 hours after the last activity
24 hours
_gat
Used to monitor the number of requests to the Google Analytics server when using Google Tag Manager
1 minute
_gac_
Contains information related to the user's marketing campaigns. This data is shared with Google AdWords / Google Ads when Google Ads and Google Analytics accounts are linked.
90 days
__utma
ID used to identify users and sessions
2 years after last activity
__utmt
Used to monitor the number 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 is loaded and no existing __utmb cookie is present. The cookie is updated each time data is sent to the Google Analytics server.
30 minutes after last activity
