Autoptimize
800,000+ active installs · Rated 4.7/5 · Updated September 26, 2026
Speeds up a site by aggregating, minifying and caching CSS and JavaScript, moving and deferring scripts, minifying HTML, and lazy-loading images. It can also tidy Google Fonts loading and remove emoji scripts. It suits sites that want to reduce front-end weight without changing theme code. The free plugin has no page cache; a paid Pro version adds caching, image optimisation, CDN and critical CSS. Its limit is that aggressive script changes can break pages and need testing.
Pros
- Aggregates and minifies CSS and JavaScript
- Lazy-loads images with WebP and AVIF support
- Works without changing theme code
Cons
- Aggressive script changes can break pages and need testing
- Page cache, CDN and critical CSS need the paid Pro version
Topics: Speed Optimization plugins
Alternatives
-
Speed Optimizer
1M+ active installs · Rated 4.2/5 · Updated October 20, 2026
Speed Optimizer is SiteGround's free performance plugin.
-
WP Fastest Cache
1M+ active installs · Rated 4.9/5 · Updated October 10, 2026
A caching plugin with a simple settings screen that creates static pages and also offers minification, GZIP compression, browser caching and image options.
-
WP Smush
1M+ active installs · Rated 4.8/5 · Updated October 20, 2026
An image optimisation plugin that compresses and resizes images, enables lazy loading, converts to modern formats such as WebP and AVIF, and offers a global image CDN.
-
WP Super Cache
1M+ active installs · Rated 4.3/5 · Updated September 30, 2026
A caching plugin from Automattic that generates static HTML files from dynamic pages, so most visitors are served without running PHP.
-
WP-Optimize
1M+ active installs · Rated 4.8/5 · Updated September 21, 2026
A plugin that combines page caching with database cleaning, image compression and minification.
-
W3 Total Cache
900,000+ active installs · Rated 4.4/5 · Updated October 20, 2026
A caching and performance suite covering page, object, database and browser caching, minification and content delivery network integration.
-
Converter for Media
500,000+ active installs · Rated 4.9/5 · Updated October 14, 2026
Converter for Media turns JPEG and PNG uploads into WebP files and serves them to browsers that support the format.
-
Redis Object Cache
500,000+ active installs · Rated 4.5/5 · Updated September 18, 2026
A persistent object cache backend that stores WordPress object cache data in a Redis server.