| _ga |
Used to distinguish users. |
2 years |
Cookie |
google.com |
| _gid |
Used to distinguish users. |
24 hours |
Cookie |
google.com |
| _gat |
Used to throttle request rate.
If Google Analytics is deployed via Google Tag Manager, this service will be named _dc_gtm_
|
1 minute |
Cookie |
google.com |
| AMP_TOKEN |
Contains a token that can be used to retrieve a Client ID from AMP Client ID service.
Other possible values indicate opt-out, inflight request or an error retrieving a Client ID from AMP
Client ID service.
|
30 seconds up to 1 year |
Cookie |
google.com |
| _gac_ |
Contains campaign related information for the user.
If you have linked your Google Analytics and Google Ads accounts, Google Ads website conversion tags
will read this service unless you opt-out.
Learn more.
|
90 days |
Cookie |
google.com |
| __utma |
Used to distinguish users and sessions.
The service is created when the javascript library executes and no existing __utma cookies exists.
The service is updated every time data is sent to Google Analytics.
|
2 years |
Cookie |
google.com |
| __utmt |
Used to throttle request rate. |
10 minutes |
Cookie |
google.com |
| __utmb |
Used to determine new sessions/visits.
The service is created when the javascript library executes and no existing __utmb cookies exists.
The service is updated every time data is sent to Google Analytics.
|
30 minutes |
Cookie |
google.com |
| __utmz |
Stores the traffic source or campaign that explains how the user reached your site.
The service is created when the javascript library executes and is updated every time data is sent
to Google Analytics.
|
6 months |
Cookie |
google.com |
| __utmv |
Used to store visitor-level custom variable data.
This service is created when a developer uses the _setCustomVar method with a visitor level custom
variable.
This service was also used for the deprecated _setVar method.
The service is updated every time data is sent to Google Analytics.
|
2 years |
Cookie |
google.com |
| __utmx |
Used to determine a user's inclusion in an experiment.
|
18 months |
Cookie |
google.com |
| __utmxx |
Used to determine the expiry of experiments a user has been included in.
|
18 months |
Cookie |
google.com |
| _gaexp |
Used to determine a user's inclusion in an experiment and the expiry of experiments a user has been
included in.
|
Depends on the length of the experiment, but typically 90 days. |
Cookie |
google.com |
| _opt_awcid |
Used for campaigns mapped to Google Ads Customer IDs.
|
24 hours |
Cookie |
google.com |
| _opt_awmid |
Used for campaigns mapped to Google Ads Campaign IDs.
|
24 hours |
Cookie |
google.com |
| _opt_awgid |
Used for campaigns mapped to Google Ads Ad Group IDs.
|
24 hours |
Cookie |
google.com |
| _opt_awkid |
Used for campaigns mapped to Google Ads Criterion IDs.
|
24 hours |
Cookie |
google.com |
| _opt_utmc |
Stores the last utm_campaign query parameter.
|
24 hours |
Cookie |
google.com |
