OmegaPix Image Optimizer converts your uploads to WebP and AVIF automatically, entirely on your server. No cloud, no uploads, faster Core Web Vitals.
By Webx Developers · Requires WordPress 6.2+ and PHP 7.4+
Why it matters
Unoptimized images are the biggest drag on WordPress speed.
Images are usually the largest asset on a page and the top factor in Largest Contentful Paint. Serving them as WebP or AVIF instead of JPEG or PNG can cut their size by 25 to 50 percent, which directly improves your Core Web Vitals and how fast pages feel. This plugin does it for every upload, without changing how you work.
Everything the plugin does
Automatic, local, and non-destructive by default.
Local-first processing
Every operation runs on your own server with GD or Imagick. Nothing is ever sent to a third-party service, so it stays private and GDPR-friendly.
Automatic on upload
New images are optimized the moment they are added to the Media Library. Your editing workflow does not change at all.
Resizes, never rejects
Oversized images are capped to your maximum dimension and optimized on arrival instead of being blocked. Large uploads just work.
WebP and AVIF
Prefers AVIF, the most efficient next-gen format, and falls back to WebP based on what your server supports.
Bulk optimization
Optimize your entire existing Media Library in timeout-safe batches, with live progress so large libraries finish reliably.
Media Library savings
A column in the Media Library shows the optimization status and how much file size each image saved.
One-click reprocess
Reprocess any single attachment on demand with a single click when you want to re-run it.
Non-destructive by default
Originals are always preserved and next-gen copies are generated alongside them. Replacing the original is optional and off by default.
Capability detection
Detects whether your server supports WebP and AVIF and warns you clearly about any limitations up front.
File-type controls
A simple allowlist lets you choose exactly which image types the plugin is allowed to process, so it only touches what you want.
Free and open source
Core features are free, and the code is browsable on the official WordPress.org plugin directory.
How it works
Install and activate
Add the plugin from your WordPress dashboard or WordPress.org, then activate it. No account or API key needed.
Uploads optimize themselves
From then on, every image you upload is resized if oversized and converted to WebP or AVIF on your server, automatically.
Bulk-optimize the rest
Run bulk optimization once to convert the images already in your Media Library, and watch the savings add up.
Browser tools or WordPress plugin?
They solve the same problem in two places. Use whichever fits, or both.
| OmegaPix.app tools | WordPress plugin | |
|---|---|---|
| Runs | In your browser | On your WordPress server |
| Best for | One-off edits and conversions | Automating a whole site |
| When it runs | Manually, per file | Automatically, on every upload |
| Formats | JPG, PNG, WebP, AVIF, HEIC, PDF | WebP and AVIF |
| Privacy | Files never leave your device | Files never leave your server |
| Cost | Free | Free |
Need a quick one-off? Try the browser image compressor.
Requirements
WordPress
6.2 or higher
PHP
7.4 or higher
Server
GD or Imagick
Frequently asked questions
Is the plugin free?
Yes. The core features are free and the plugin is open source, listed on the official WordPress.org plugin directory.
Does it upload my images to a server or cloud?
No. All processing runs locally on your own WordPress server using PHP's GD or Imagick. Your images never leave your infrastructure, which keeps it private and GDPR-friendly.
What is the difference between WebP and AVIF here?
The plugin prefers AVIF, the more efficient next-gen format, and falls back to WebP based on what your server supports. Both are far smaller than JPEG or PNG at the same quality.
Will it break or delete my original images?
No. It is non-destructive by default: originals are preserved and next-gen copies are generated alongside them. "Replace original" is optional and turned off by default.
Can it optimize images I already uploaded?
Yes. Bulk optimization processes your existing Media Library in timeout-safe batches with live progress, and you can reprocess any single image with one click.
What are the requirements?
WordPress 6.2 or higher and PHP 7.4 or higher, with GD or Imagick compiled with WebP or AVIF support. The plugin detects your server capability and warns you if a format is unavailable.
How is this different from the OmegaPix website tools?
The omegapix.app tools run in your browser for one-off edits. The WordPress plugin runs on your server and optimizes every image automatically as it is uploaded, across your whole site.
Lighter images, faster site, on autopilot.
Install the free OmegaPix Image Optimizer and let WordPress convert every image to WebP and AVIF for you.