Miscellaneous
Who left PDF.js, and who still runs it
2,698 websites in the top 1M run PDF.js, observed directly from the rendered page in the July 2026 crawl.
1,248
stopped running it that month
134
of those are 11–500 employees
4,057
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running PDF.js
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
core-js 63%Google Analytics 56%Cloudflare 53%HSTS 52%jQuery 48%Google Font API 47%React 43%Open Graph 40%PWA 38%Google Tag Manager 36%
Share of a 2,698-domain sample of PDF.js users that also run each.