Imsanity vs reSmush.it Image Optimizer
Compare WordPress plugins and tools side by side. Pick products with “Compare” in the software directory.
| Feature | Imsanity v2.9.4 · checked 23 Oct 2026 Free · ★ 4.9/5 Visit Details | reSmush.it Image Optimizer v1.0.6 · checked 23 Oct 2026 Free · ★ 4.3/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | 200,000+ | 100,000+ |
| Last updated | August 20, 2026 | August 20, 2026 |
| Editions | Imsanity | reSmush.it Image Optimizer |
| Pros | Resizes uploads automatically, with no action from the contributor; Separate size limits for Media Library and other uploads; Bulk resize and per-image resize from the Media Library | Free, with no paid edition; Optimises on upload and in bulk; Quality setting and EXIF removal option |
| Cons | Replaces the original, so the full-size file cannot be recovered; Uses the standard WordPress resize, so output is not heavily optimised; No paid edition; support is through the WordPress.org forum | Sends image files to an external service; API calls use plain HTTP and disable SSL host checks; Relies on a third-party service being available |
| Mentioned in our posts | 1 | 1 |
| More features | ||
| Other features | Resizes oversized images at upload, before WordPress processes them, Separate maximum width and height for Media Library, other, and all uploads, JPG quality setting applied to resized images, Optional conversion of BMP files to JPG, Bulk resize of existing Media Library images, Resize or remove original from the Media Library list view | Optimise images on upload, Bulk optimise from the Media Library, Image quality setting, Keep or remove EXIF data, Scheduled optimisation through cron, Optimisation status column in the Media Library, WP-CLI quality command |
| Integrations | ||
| Other | — | reSmush.it optimisation API |
| Requires WordPress | 6.8 | 4.0.0 |
| Requires PHP | 7.4 | 7.4 |
| Tested up to | 7.1 | 7.1 |
| Phones home | No | No |
| External services | — | api.resmush.it |