What is the sid cookie?
Download certain Google Tools and save certain preferences, for example the number of search results per page or activation of the SafeSearch Filter. Adjusts the ads that appear in Google Search.
Our October 2026 scan found it on 14 sites (1% of the 2,450 we scanned), set before any consent.
- Purpose
- Unclassified
- Belongs to
- Set as
- First-party on 93% of sites, third-party on 7%
- Typical lifetime
- 13 months (vendor says: 2 years) — shorter than the vendor documents
Sites that set sid before consent
The highest-ranked 14 of 14 sites.
- medium.com2 tracking companies
- bestbuy.com0 tracking companies
- discogs.com3 tracking companies
- bankofamerica.com3 tracking companies
- haberler.com14 tracking companies
- deezer.com4 tracking companies
- sinoptik.ua2 tracking companies
- ss.com0 tracking companies
- semanticscholar.org3 tracking companies
- dnspod.com3 tracking companies
Show 4 more sites
- profi.ru4 tracking companies
- litres.ru0 tracking companies
- belkin.com4 tracking companies
- gamestop.com6 tracking companies
Related cookies
Other cookies from Google.
- _gcl_au336 sites
- FCCDCF141 sites
- receive-cookie-deprecation136 sites
- __Secure-YNID113 sites
- g_state92 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop sid being set on later visits. Blocking third-party cookies in your browser settings stops the third-party kind everywhere, and clearing cookies for a site removes any it already set.
Description from the Open Cookie Database (Apache 2.0).
Understanding this page
- How cookie lifetimes work, and why a 13-month _ga matters
What a cookie's "expires" field actually controls, why Google Analytics ships a 2-year default that many sites cut down to 13 months, and how Safari's 7-day cap on script-set cookies changes the picture.
- First-party vs third-party cookies (and why "first-party" still tracks you)
What the distinction actually means technically, why browsers only block one of the two, and how CNAME cloaking, server-side tagging and cookies like _ga let sites keep tracking under their own domain.
- How to block or limit trackers
Browser privacy settings, content blockers, Global Privacy Control and clearing cookies compared honestly — what each one actually stops, what it doesn't, and what it costs you in return.