Autoptimize vs Lozad.js

Autoptimize is the more common of the two in our index: it runs on 345 websites against 335 for Lozad.js, and 5 sites use both. Counts come from real scans, not vendor claims.

Autoptimize
345
Lozad.js
335

Used together

5 sites run both Autoptimize and Lozad.js. That is 1% of the sites using Lozad.js, the smaller of the two.

More comparisons

Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.