Speed Optimizer
1M+ active installs · Rated 4.2/5 · Updated October 20, 2026
Speed Optimizer is SiteGround's free performance plugin. It adds file-based page caching, browser cache headers, HTML, CSS and JavaScript minification, lazy loading, image optimisation and WebP, scheduled database cleanup and heartbeat control. It suits WordPress site owners who want speed gains from settings alone. Limit: dynamic caching, Memcached and some CDN options are tied to SiteGround hosting, and the CDN premium tier is checked against the host.
Pros
- Page caching, minification and lazy loading in one place
- Browser cache headers and database cleanup
- Free, from the WordPress.org directory
Cons
- Dynamic caching and Memcached are SiteGround-only
- CDN premium tier depends on the hosting plan
- Calls Google PageSpeed and Google Fonts services
Topics: Speed Optimization plugins
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