Speed Optimizer vs WP Fastest Cache
Compare WordPress plugins and tools side by side. Pick products with “Compare” in the software directory.
| Feature | Speed Optimizer v7.8.5 · checked 23 Oct 2026 Free · ★ 4.2/5 Visit Details | WP Fastest Cache v1.5.3 · checked 23 Oct 2026 Free + paid · ★ 4.9/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | 1M+ | 1M+ |
| Last updated | October 20, 2026 | October 10, 2026 |
| Editions | Speed Optimizer | WP Fastest Cache · WP Fastest Cache Premium ($) |
| Pros | Page caching, minification and lazy loading in one place; Browser cache headers and database cleanup; Free, from the WordPress.org directory | Static page cache with a simple settings screen; Browser caching and GZIP rules written for the site; Cache is cleared when a post changes status; Cloudflare cache purge from the settings screen |
| Cons | Dynamic caching and Memcached are SiteGround-only; CDN premium tier depends on the hosting plan; Calls Google PageSpeed and Google Fonts services | Database cleanup, mobile cache and advanced minification are Premium only; Cache and browser rules are written to .htaccess files |
| Mentioned in our posts | — | 2 |
| Features (Speed Optimization plugins checklist) | ||
| Page cache | Yes | Yes |
| Browser cache | Yes | Yes |
| Minify CSS/JS | Yes | Yes |
| CDN | Paid | Yes |
| Object cache | Yes | No |
| Database cleanup | Yes | Paid |
| Free version | Yes | Yes |
| More features | ||
| Other features | Lazy loading of images, iframes and videos, Image optimisation, WebP image conversion, Force HTTPS, Heartbeat control, PageSpeed analysis | Clears cache when a post changes status, Delete cached and minified CSS/JS files, GZIP rules in .htaccess, Cloudflare cache purge, Clear all cache from a URL call, Skips caching when DONOTCACHEPAGE is defined, Exclusion rules by page type |
| Integrations | ||
| Analytics | Google PageSpeed Insights | — |
| Other | Google Fonts | Cloudflare |
| Requires WordPress | 5.5.1 | 5.7 |
| Requires PHP | 7.0 | — |
| Tested up to | 7.1 | 7.1 |
| Phones home | No | No |
| External services | www.googleapis.com, fonts.googleapis.com, sgwpdemo.com, api.wordpress.org | api.cloudflare.com |