BootstrapCDN vs cdnjs

cdnjs is used by more websites in our catalog: 39,625 use BootstrapCDN and 83,506 use cdnjs.

cdnjs sites have the higher median Ahrefs Domain Rating (BootstrapCDN: 29, cdnjs: 31).

Between 2026-06 and 2026-07, BootstrapCDN went from 4.9% to 4.5% of all tracked sites, while cdnjs went from 11% to 9.5%. BootstrapCDN is gaining ground faster in our index.

15,896 websites in our catalog use both BootstrapCDN and cdnjs.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.