Cookie Name |
Default expiration time |
Description |
Google Analytics |
_ga |
2 years |
Used to distinguish users |
_gid |
24 hours |
Used to distinguish users |
_gat |
1 minute |
Used to throttle request rate. If
Google Analytics is deployed
via Google Tag Manager, this
cookie will be named
_dc_gtm_<property-id>
|
AMP_TOKEN |
30 seconds to 1 year |
Contains a token that can be
used to retrieve a Client ID
from AMP |
_gac_<property-id> |
90 days |
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 cookie unless you opt-out. |
__utma |
2 years from set/update |
Used to distinguish users
and sessions. The cookie
is created when the
javascript library executes
and no existing __utma
cookies exists. The cookie
is updated every time
data is sent to Google
Analytics. |
__utmt |
10 minutes |
Used to throttle request rate. |
__utmb |
30 mins from set/update |
Used to determine new
sessions/visits. The cookie
is created when the
javascript library executes
and no existing __utmb
cookies exists. The cookie
is updated every time data is sent to Google
Analytics. |
__utmc |
End of browser session |
Not used in ga.js. Set for
interoperability with
urchin.js. Historically,
this cookie operated in
conjunction with
the __utmb cookie to
determine whether the
user was in a new
session/visit. |
__utmz |
6 months from
set/update |
Stores the traffic source
or campaign that
explains how the user
reached your site. The
cookie is created when
the javascript library
executes and is updated
every time data is sent
to Google Analytics. |
__utmv |
2 years from set/update |
Used to store visitor-level
custom variable data. This
cookie is created when a
developer uses
the _setCustomVar method with a visitor level
custom variable. This
cookie was also used for
the
deprecated _setVar method. The cookie is updated
every time data is sent to
Google Analytics. |
Amazon |
CognitoIdentityServiceProvider.* |
Indefinitely (user can
remove it manually if they
wish)
|
Strictly necessary. Identifies
logged in user / stores session
info to keep user logged in
between visits |