Optimize WordPress Images.
On your own server.
Test the compression here, then install BEST IMG Optimizer to automate it directly inside your WordPress media library — no image ever leaves your server.
Glissez vos images ici
PNG, JPG, WebP, AVIF · 5MB max par lot
BEST IMG Optimizer for WordPress
Optimisez directement les images de votre médiathèque WordPress, sans changer d'onglet. Compression 100% locale sur votre propre serveur (aucune image envoyée à l'extérieur) — le même principe que l'outil en ligne.
A WordPress image optimizer that doesn't phone home
Most WordPress image optimization plugins (ShortPixel, Imagify, and similar) work by uploading your images to their own cloud servers for processing. BEST IMG Optimizer takes a different approach: compression happens with Imagick or GD directly on your own WordPress server, so your images never leave your infrastructure — a meaningful difference for client sites under an NDA, medical or legal content, or anyone who simply prefers not to route their media library through a third party.
How it works
Try it here first
Use the tool on this page to see the compression quality for yourself — no installation needed.
Install the plugin
Download BEST IMG Optimizer, install it like any WordPress plugin, and it appears right in your Media Library.
Optimize your library
Compress images one by one, in bulk, or automatically on every upload — entirely on your own server.
Why choose a locally-processed WordPress optimizer
- Images never leave your server — no third-party cloud processing.
- 20 free optimizations per day, no account required to start.
- WebP + AVIF conversion, bulk optimization, and automatic backup with one-click restore (Premium).
- Works with any theme or page builder, since it operates on the Media Library directly.
- The same compression engine as the best-img.com web tool, so you can preview results before installing anything.
Frequently asked questions
How is this different from ShortPixel or Imagify?
Those services upload your images to their own servers for processing. BEST IMG Optimizer compresses images directly on your own WordPress server using Imagick or GD — your images are never sent anywhere.
Will it slow down my site?
No — optimization happens once, when you choose to run it (or automatically on upload), not on every page view. Your visitors are served the already-optimized files.
Does it work with any WordPress theme or page builder?
Yes, since it works through the standard WordPress Media Library, it's compatible with any theme, page builder, or other plugin.
What's included in the free plugin?
20 optimizations per day, site-wide, with full JPEG/PNG/WebP recompression — genuinely usable on its own, no trial period.
What does Premium add?
Unlimited images, WebP/AVIF conversion with automatic replacement, bulk optimization of the whole library, automatic resizing, before/after statistics, and automatic backup with one-click restore.