What is the visitor_id* cookie?
The visitor cookie includes a unique visitor ID and the unique identifier for your account.
Our October 2026 scan found it on 12 sites (0% of the 2,450 we scanned), set before any consent.
- Purpose
- Advertising
- Belongs to
- Salesforce
- Set as
- First-party on 67% of sites, third-party on 33%
- Typical lifetime
- 12 months (vendor says: 1 year) — about what the vendor documents
- Name
- A family of cookies: the part after visitor_id varies by site or account.
Sites that set visitor_id* before consent
The highest-ranked 12 of 12 sites.
- bloomberg.com4 tracking companies
- foxnews.com3 tracking companies
- xing.com3 tracking companies
- upwork.com1 tracking company
- getyourguide.com4 tracking companies
- zapier.com3 tracking companies
- alchemer.com13 tracking companies
- foxbusiness.com3 tracking companies
- fox.com11 tracking companies
- noon.com2 tracking companies
Show 2 more sites
- foxsports.com9 tracking companies
- theknot.com1 tracking company
Related cookies
Other cookies from Salesforce.
- t8 sites
- BrowserId5 sites
- CookieConsentPolicy*3 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop visitor_id* 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.