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List of Cookies
General purpose platform session cookie, used by sites written with Microsoft .NET based technologies. Used to maintain an anonymised user session by the server.
_ga - 1 day
_gid - up to 2 years
Used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page request in a site and used to calculate visitor, session and campaign data for the sites analytics reports.
_gat - Session
Used to throttle the request rate - limiting the collection of data on high traffic sites.
test_cookie - 1 day
DSID, IDE - Expiry Session
Used for retargeting, optimisation, reporting and attribution of Google advertisements.
r/collect - Expiry Session
Used to send data to Google Analytics about the visitor's device and behaviour. Tracks the visitor across devices and marketing channels.
_gif - Session
Keeps track of special fonts used on the website for internal analysis. Note: The cookie does not register any visitor data.
Google AdWords / Ads
ads/ga-audiences - Session
Used by Google AdWords to re-engage visitors based on the visitor's online behaviour across websites.
_gd_au - 3 months
Used by Google AdSense for experimenting with advertisement efficiency across websites using their services..