common_images vs h4

h4 is used by more websites in our catalog: 197 use common_images and 666 use h4.

common_images sites have the higher median Ahrefs Domain Rating (common_images: 30, h4: 8).

Between 2026-06 and 2026-07, common_images went from 0.03% to 0.02% of all tracked sites, while h4 went from 0.07% to 0.08%. h4 is gaining ground faster in our index.

No. A site runs a single WordPress theme, so common_images and h4 are mutually exclusive.

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.