robertcpalmer

Supercharge your site with instant-loading images (WebP)
Give your website a speed boost in minutes. This plugin converts and compresses your images to the modern, ultra-efficient WebP format—so pages feel snappier and visitors stick around longer.
Why you’ll love it!
Faster pages, happier users: WebP files are smaller, so images load noticeably quicker, but the quality stays sharp. Even when using a Compression Setting of just ‘1’.
Set & forget: Convert and compress everything in your Media Library, then let the plugin automatically optimise new uploads.
No workflow change: In the WordPress admin, you’ll still see images in their original formats. On the front end, however, visitors get the magic: lightweight, crystal-clear WebP files.
Totally FREE! There are no PRO versions to sell or the pushing of unnecessary CDN services, data-limited APIs or any Registration. Use without limits.
Safe rollback: Want to switch back? DEACTIVATE the plugin to serve your original JPG/JPEG/PNG files again — WebP copies are removed as part of the process.
<h4>How it works</h4>
Convert existing images in your Media Library to WebP.
Keep the automatic conversion on for all future uploads.
Enjoy noticeably faster page loads without touching your content.
Pro tips (read me!)
-After converting, flush all caches: any caching plugin (e.g. WP Rocket), server-side cache, and your browser cache (Windows: Ctrl+Shift+R; Mac: ⌘+Shift+R).
-If you deactivate the plugin to revert to originals, flush caches again to ensure changes show everywhere.
-If you upload an image in WebP format, because it will have no fallback jpeg/png file, if you deactivate the plugin, that image will NOT be lost when all WebP files are deleted.
-Important: ALWAYS back up your site before activating or deactivating this plugin.
** Ready to make your images smaller, sharper, and faster? Install now and feel the difference. 🚀
<h3>FAQs</h3>
= If I deactivate the plugin and then reactivate it again, will I need to convert all my images again? = 
Yes. On deactivation of the plugin, it performs a full rollback, and all WebP images created by the plugin will be deleted, and your original files jpg/png will be served. Where you have WebP files that do not have a fallback file, those files will not be removed.
<h4>What Compression Level should I set?</h4>
If your existing images are of reasonable quality, set the Compression Level to ‘1’ and get image compressions of an amazing 90%+ and get excellent performance enhancements on your site, and the quality and sharpness of the images will also amaze.

Images to WebP Converter

Convert and Compress your Image Files into WebP Format. With compression rates up to 90+%.  Make your images and pages load instantly.

jprompt

Make your WordPress site blazing fast with Pixengine – The intelligent image converter and optimizer.
Pixengine automatically converts all uploaded images to WebP and AVIF formats with intelligent optimization, reducing file sizes by 40-70% while maintaining visual quality. Perfect for improving page speed, SEO rankings, and user experience.
<h4>Key Features</h4>
Automatic Conversion 
* Auto-convert JPG and PNG uploads to WebP or AVIF 
* Choose WebP only, AVIF only, or both formats 
* Smart resizing for images over configurable width 
* Maintains aspect ratio automatically 
* Preserves transparency for PNG images 
* Converts all WordPress thumbnail sizes
AVIF Support (New in 1.1.0) 
* Next-generation AVIF format with superior compression 
* Up to 50% smaller files than WebP 
* Automatic browser detection and fallback 
* Requires PHP 8.1+ or Imagick with AVIF support
Superior Compression 
* Uses Imagick (when available) for best compression 
* Strips unnecessary metadata (EXIF, profiles) 
* Optimized settings for 40-70% file size reduction 
* Fallback to GD library with optimization 
* Separate quality controls for WebP and AVIF
Lazy Loading (New in 1.1.0) 
* Native browser lazy loading support 
* Exclude first N images (above-the-fold) 
* Improves initial page load performance 
* Works with post content, thumbnails, and attachments
Responsive Images (New in 1.1.0) 
* Automatic srcset optimization 
* Optional picture element wrapping 
* Format fallback: AVIF > WebP > Original
Caching Integration (New in 1.1.0) 
* Configurable cache headers via .htaccess 
* Browser caching for repeat visits 
* Immutable cache-control for static images
Bulk Conversion 
* Convert existing media library images 
* Keeps original files for compatibility 
* Automatic .htaccess configuration 
* Browser-based optimized image delivery 
* Progress tracking with detailed logging
<h4>Perfect For</h4>
<ul>
<li>E-commerce – Faster product page loading</li>
<li>Photographers – Portfolio optimization</li>
<li>Bloggers – Quick page loads, better SEO</li>
<li>News Sites – Handle high-volume image uploads</li>
<li>Agencies – Client site optimization</li>
<li>Developers – Performance-first development</li>
</ul>
<h4>Performance Benefits</h4>
<ul>
<li>40-70% smaller file sizes compared to JPG/PNG</li>
<li>Faster page load times – Better Core Web Vitals</li>
<li>Improved SEO rankings – Page speed is a ranking factor</li>
<li>Reduced bandwidth costs – Smaller files = less data</li>
<li>Better mobile experience – Faster loads on slow connections</li>
<li>Green hosting – Lower carbon footprint</li>
</ul>
<h4>How It Works</h4>
New Uploads (Automatic): 
1. Upload JPG or PNG image 
2. Plugin resizes if width > 1920px (configurable) 
3. Converts to WebP with optimized compression 
4. Strips metadata for smaller files 
5. Original deleted (saves storage) 
6. All thumbnails converted to WebP
Existing Images (Bulk): 
1. Click “Start Bulk Conversion” 
2. Converts all JPG/PNG in media library 
3. Keeps originals for compatibility 
4. Updates .htaccess for automatic WebP delivery 
5. Browsers that support WebP get optimized images 
6. Older browsers get original JPG/PNG
<h4>Technical Details</h4>
Compression Methods: 
* Primary: Imagick with method 6 (best compression) 
* Fallback: GD with alpha channel preservation 
* Automatic metadata stripping 
* Configurable quality settings (1-100) 
* Smart resizing with LANCZOS filtering
WebP Options (Imagick): 
* Method 6 compression (highest quality) 
* Lossy compression for better file sizes 
* Alpha quality 100 (perfect transparency) 
* Auto-filter optimization 
* Lossless option available
Browser Compatibility: 
* Automatic .htaccess rules for serving WebP 
* Fallback to original JPG/PNG for older browsers 
* Supports Chrome, Firefox, Edge, Safari 14+, Opera 
* Mobile browsers fully supported
<h4>Privacy & Performance</h4>
<ul>
<li>No external API calls</li>
<li>All processing done on your server</li>
<li>No data collection or tracking</li>
<li>Minimal performance impact</li>
<li>Asynchronous bulk conversion</li>
<li>Progress tracking without page reload</li>
</ul>
<h3>Technical Specifications</h3>
<h4>Supported Formats</h4>
<ul>
<li>Input: JPEG, JPG, PNG</li>
<li>Output: WebP, AVIF</li>
</ul>
<h4>Compression Details</h4>
<ul>
<li>Imagick: Method 6, lossy, auto-filter (WebP and AVIF)</li>
<li>GD: Alpha blending, transparency preservation</li>
<li>AVIF: Requires PHP 8.1+ or Imagick with AVIF support</li>
<li>Metadata stripping: EXIF, color profiles, thumbnails</li>
<li>Quality range: 1-100 (WebP: 70-80, AVIF: 60-70 recommended)</li>
</ul>
<h4>File Size Reductions</h4>
<ul>
<li>WebP from JPEG: 40-60% reduction</li>
<li>WebP from PNG: 50-70% reduction</li>
<li>AVIF from JPEG: 50-70% reduction</li>
<li>AVIF from PNG: 60-80% reduction</li>
<li>Large images (>1920px): 60-85% reduction</li>
</ul>
<h4>Browser Support</h4>
<ul>
<li>Chrome/Edge: Full WebP and AVIF support</li>
<li>Firefox: Full WebP and AVIF support</li>
<li>Safari: WebP 14+, AVIF 16+ (macOS Ventura, iOS 16)</li>
<li>Opera: Full support</li>
<li>IE/Legacy: Automatic fallback to JPG/PNG</li>
</ul>
<h3>Privacy Policy</h3>
This plugin does not: 
* Collect any personal data 
* Send images to external servers 
* Use cookies 
* Track users 
* Make any external API calls
<h3>Support</h3>
Community support via WordPress.org forums.
<h3>Credits</h3>
Developed by JPrompt.

JPrompt's Pixengine – Image Converter & Optimizer

Automatically convert and optimize images to WebP and AVIF formats with intelligent resizing, lazy loading, and caching. Boost page speed by 40-70% wi …

Images to WebP Converter vs JPrompt's Pixengine – Image Converter & Optimizer