Pixellize Image Optimizer is a fast, lightweight, and beginner-friendly WordPress plugin that automatically converts uploaded images into modern WebP format.

It ensures that your website loads faster by replacing original image URLs across your entire site — including post content, image tags, and responsive srcset.

⚡ No manual conversion. No complex setup. Just upload and optimize.

🔥 Key Features

✅ Automatic WebP conversion on image upload
✅ Bulk optimize images already in your library, with a live progress bar and background processing
✅ Optimize a single page’s images on demand from the admin toolbar
✅ Supports JPG, JPEG, PNG, BMP, and AVIF
✅ Skips images already in WebP format
✅ Smart fallback to Imagick if GD is unavailable
✅ Adjustable WebP quality (0–100, default: 85)
✅ Optional maximum image dimension to scale down large uploads before conversion
✅ Replace image URLs in:

Attachment tags
srcset (responsive images)
Post/page content

✅ Keep originals and add WebP for every size, or replace and delete to save storage
✅ Restore a single image back to its original from the Media Library
✅ Keeps original file safe if conversion fails
✅ Prevents duplicate conversions
✅ Activation blocked if no supported library (GD/Imagick) is found

🚀 Why Use This Plugin?

Improve Core Web Vitals (LCP, CLS)
Boost SEO rankings
Reduce page load time
Save server storage
Deliver modern image formats automatically

Requirements

PHP 7.4 or higher
PHP GD extension (recommended) or Imagick

Usage

Upload images normally via Media Library
Images are automatically converted to WebP
Customize settings under Tools Pixellize Image Optimizer
Already converted images are skipped automatically

Roadmap

Serve WebP everywhere, including page builders and ACF fields, via output rewriting
CDN URL rewriting (use your own CDN host for images)
AVIF output alongside WebP
Lazy loading integration

License

This plugin is licensed under GPL v2 or later.

Author

Pixellize
🌐 https://pixellize.io

Pixellize Image Optimizer

About this plugin