Extra vs hello-theme-child

Extra is used by more websites in our catalog: 795 use Extra and 140 use hello-theme-child.

hello-theme-child sites have the higher median Ahrefs Domain Rating (Extra: 27, hello-theme-child: 38).

Between 2026-06 and 2026-07, Extra went from 0.11% to 0.09% of all tracked sites, while hello-theme-child went from 0.02% to 0.02%. hello-theme-child is gaining ground faster in our index.

No. A site runs a single WordPress theme, so Extra and hello-theme-child 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.