Lozad.js vs Perfmatters

Perfmatters is used by more websites in our catalog: 1,282 use Lozad.js and 7,535 use Perfmatters.

Lozad.js sites have the higher median Ahrefs Domain Rating (Lozad.js: 34, Perfmatters: 31).

Between 2026-06 and 2026-07, Lozad.js went from 0.17% to 0.15% of all tracked sites, while Perfmatters went from 1.1% to 0.86%. Lozad.js is gaining ground faster in our index.

7 websites in our catalog use both Lozad.js and Perfmatters.

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.