Bootstrap vs Pure CSS

Bootstrap is used by more websites in our catalog: 126,851 use Bootstrap and 816 use Pure CSS.

Pure CSS sites have the higher median Ahrefs Domain Rating (Bootstrap: 29, Pure CSS: 32).

Between 2026-06 and 2026-07, Bootstrap went from 16% to 14% of all tracked sites, while Pure CSS went from 0.11% to 0.09%. Pure CSS is gaining ground faster in our index.

218 websites in our catalog use both Bootstrap and Pure CSS.

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.