LazySizes vs Partytown

LazySizes is used by more websites in our catalog: 30,997 use LazySizes and 861 use Partytown.

Partytown sites have the higher median Ahrefs Domain Rating (LazySizes: 25, Partytown: 34).

Between 2026-06 and 2026-07, LazySizes went from 4.0% to 3.5% of all tracked sites, while Partytown went from 0.12% to 0.10%. Partytown is gaining ground faster in our index.

26 websites in our catalog use both LazySizes and Partytown.

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.