Autoptimize vs LazySizes

LazySizes is used by more websites in our catalog: 10,272 use Autoptimize and 30,997 use LazySizes.

Autoptimize sites have the higher median Ahrefs Domain Rating (Autoptimize: 27, LazySizes: 25).

Between 2026-06 and 2026-07, Autoptimize went from 1.4% to 1.2% of all tracked sites, while LazySizes went from 4.0% to 3.5%. Autoptimize is gaining ground faster in our index.

3,537 websites in our catalog use both Autoptimize and LazySizes.

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.