Redis Object Cache vs WP Smush
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| Feature | Redis Object Cache v3.0.0 · checked 23 Oct 2026 Free + paid · ★ 4.5/5 Visit Details | WP Smush v4.3.5 · checked 23 Oct 2026 Free + paid · ★ 4.8/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | 500,000+ | 1M+ |
| Last updated | September 18, 2026 | October 20, 2026 |
| Editions | Redis Object Cache · Object Cache Pro ($) | Smush · Smush Pro ($) |
| Pros | Supports several Redis clients, including Relay and PhpRedis; Sentinel and replication configuration in the free version; Status, diagnostics, WP-CLI commands and a flush action in admin | 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 | Object cache only: no page caching, minification or CDN; Needs a reachable Redis server and PHP client extension or library; Shows upgrade prompts for the paid Object Cache Pro | WebP, AVIF, resizing and the image CDN need Smush Pro; Images are sent to the WPMU DEV API for compression |
| Mentioned in our posts | — | 3 |
| Features (Speed Optimization plugins checklist) | ||
| Page cache | No | — |
| Browser cache | No | — |
| Minify CSS/JS | No | — |
| CDN | No | Yes |
| Object cache | Yes | — |
| Database cleanup | No | — |
| Free version | Yes | Yes |
| More features | ||
| Other features | Predis, PhpRedis, Relay and Credis clients, Sentinel and replication settings, WP-CLI redis commands, Dashboard status widget, Admin bar status and flush, Query Monitor collector and output, Hit and miss metrics pruned hourly, Automatic object-cache.php drop-in update, Upgrade prompts for Object Cache Pro | Bulk compression of the media library, Lazy loading for images and embedded video, WebP and AVIF conversion (Pro) ($) |
| Integrations | ||
| Storage | Redis server | — |
| E-commerce | — | WooCommerce |
| Plugins | Query Monitor | WP Rocket, Elementor, Divi, Gravity Forms |
| Other | WP-CLI | WPMU DEV Smush API |
| Requires WordPress | 4.6 | 6.4 |
| Requires PHP | 7.2 | 7.4 |
| Tested up to | 7.1 | 7.1 |
| Phones home | No | Only if you agree |
| External services | — | smushpro.wpmudev.com |
| Custom tables | — | 1 |