Comet Cache vs WP Smush
Compare WordPress plugins and tools side by side. Pick products with “Compare” in the software directory.
| Feature | Comet Cache v170220 · checked 23 Oct 2026 Free + paid · ★ 4.4/5 Visit Details | WP Smush v4.3.5 · checked 23 Oct 2026 Free + paid · ★ 4.8/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | 20,000+ | 1M+ |
| Last updated | July 2, 2025 | October 20, 2026 |
| Editions | Comet Cache · Comet Cache Pro ($) | Smush · Smush Pro ($) |
| Pros | Free full-page cache for anonymous visitors; Cron-driven cleanup of cache files; Simple settings for browser caching of dynamic pages | Bulk and on-upload image compression at no cost; Lazy loading for images and embedded video; Works with common page builders, WooCommerce and caching plugins |
| Cons | HTML and asset minification need Pro; CDN filters and Apache optimisations need Pro; Logged-in users are not cached in the free version | WebP, AVIF, resizing and the image CDN need Smush Pro; Images are sent to the WPMU DEV API for compression |
| Mentioned in our posts | 1 | 3 |
| Features (Speed Optimization plugins checklist) | ||
| Page cache | Yes | — |
| Browser cache | Yes | — |
| Minify CSS/JS | Paid | — |
| CDN | Paid | Yes |
| Object cache | No | — |
| Database cleanup | No | — |
| Free version | Yes | Yes |
| More features | ||
| Other features | Cron job that cleans up cache files, Excludes WooCommerce pages and clears on stock change, Cache logged-in users (Pro) ($), HTML Compressor for CSS, JS and HTML (Pro) ($), Static CDN filters and domain sharding (Pro) ($), Automatic updater for Pro ($) | Bulk compression of the media library, Lazy loading for images and embedded video, WebP and AVIF conversion (Pro) ($) |
| Integrations | ||
| E-commerce | WooCommerce | WooCommerce |
| Plugins | bbPress | WP Rocket, Elementor, Divi, Gravity Forms |
| Other | — | WPMU DEV Smush API |
| Requires WordPress | 4.2 | 6.4 |
| Requires PHP | — | 7.4 |
| Tested up to | 6.9-alpha-60398 | 7.1 |
| Phones home | No | Only if you agree |
| External services | — | smushpro.wpmudev.com |
| Custom tables | — | 1 |