Browser fingerprinting; JavaScript libraries
Who left FingerprintJS, and who still runs it
6,221 websites in the top 1M run FingerprintJS, observed directly from the rendered page in the July 2026 crawl.
1,571
stopped running it that month
113
of those are 11–500 employees
4,665
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running FingerprintJS
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
jQuery 76%Cloudflare 71%Google Analytics 68%Open Graph 66%core-js 63%Google Tag Manager 58%HSTS 48%Google Font API 46%PHP 43%HTTP/3 38%
Share of a 3,000-domain sample of FingerprintJS users that also run each.