LazyLoad by WP Rocket vs Speed Optimizer
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| Feature | LazyLoad by WP Rocket v2.4.1 · checked 23 Oct 2026 Free · ★ 4.2/5 Visit Details | Speed Optimizer v7.8.5 · checked 23 Oct 2026 Free · ★ 4.2/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | 100,000+ | 1M+ |
| Last updated | October 6, 2026 | October 20, 2026 |
| Editions | Lazy Load - Optimize Images | Speed Optimizer |
| Pros | Three simple toggles: images, iframes/videos, YouTube thumbnails; Small script with no jQuery dependency; Filters and data-no-lazy attribute for fine-grained exclusions | Page caching, minification and lazy loading in one place; Browser cache headers and database cleanup; Free, from the WordPress.org directory |
| Cons | Lazy loading only; no caching or file optimisation; Native browser lazy loading only through a code filter; Shows an Imagify promotion notice in the admin | Dynamic caching and Memcached are SiteGround-only; CDN premium tier depends on the hosting plan; Calls Google PageSpeed and Google Fonts services |
| Mentioned in our posts | 1 | — |
| Features (Speed Optimization plugins checklist) | ||
| Page cache | No | Yes |
| Browser cache | No | Yes |
| Minify CSS/JS | No | Yes |
| CDN | No | Paid |
| Object cache | No | Yes |
| Database cleanup | No | Yes |
| Free version | Yes | Yes |
| More features | ||
| Other features | Lazy load images, Lazy load iframes and videos, Replace YouTube iframes with a preview thumbnail, Lazy load inline background images, Exclusions via data-no-lazy, skip-lazy and filters, Native lazy loading via filter, Disabled on AMP pages | Lazy loading of images, iframes and videos, Image optimisation, WebP image conversion, Force HTTPS, Heartbeat control, PageSpeed analysis |
| Integrations | ||
| Analytics | — | Google PageSpeed Insights |
| Social | YouTube | — |
| Plugins | AMP | — |
| Other | — | Google Fonts |
| Requires WordPress | 4.9 | 5.5.1 |
| Requires PHP | 7.4 | 7.0 |
| Tested up to | 7.1 | 7.1 |
| Phones home | No | No |
| External services | i.ytimg.com | www.googleapis.com, fonts.googleapis.com, sgwpdemo.com, api.wordpress.org |