RobertWP

RW WebP Converter Lite is a lightweight and easy-to-use WordPress plugin that helps you optimize images by converting JPG and PNG files into the modern WebP format.
The plugin allows you to bulk convert existing images in the media library and automatically convert newly uploaded images to WebP. By reducing image file size while maintaining quality, RW WebP Converter Lite helps improve website loading speed and overall performance.
All features are optional and can be configured from the plugin settings page.
Features: 
* Bulk convert existing JPG and PNG images in the media library to WebP 
* Automatically convert newly uploaded images to WebP 
* Enable or disable automatic conversion via settings 
* Lightweight and fast, with no unnecessary features 
* Compatible with the WordPress media library
Documentation: 
<a href="https://docs.robertwp.com/rw-webp-converter-lite/" rel="nofollow ugc">Plugin Documentation</a> 
Includes setup and usage instructions for this plugin.
<h3>Source Code</h3>
This plugin includes minified JavaScript and CSS files for performance 
and distribution purposes.
The original, human-readable source code for these files is publicly 
available and maintained on GitHub:
https://github.com/robert2021south/rw-webp-converter-lite
The following files are minified in the plugin package: 
– assets/js/rwwcl-admin-bulk.min.js 
– assets/js/rwwcl-admin-deactivate.min.js 
– assets/js/rwwcl-admin-feedback.min.js 
– assets/css/rwwcl-admin-style.min.css 
– assets/css/rwwcl-admin-deactivate-modal.min.css
<h3>Privacy</h3>
This plugin respects your privacy. Any data collected (such as optional feedback or deactivation reasons) is handled transparently and securely.
Feedback Data: When you use the feedback form in the About tab, we collect your rating, feedback message, and optionally your email address. This helps us understand user needs and improve the plugin. 
Deactivation Data: When you uninstall the plugin, you may optionally provide a reason for leaving. This helps us identify areas for improvement.
All data, including any optional email address, is transmitted securely (via TLS/HTTPS) and retained only as long as necessary. For example, feedback data is retained for a maximum of 12 months to help us improve the plugin.
We do not collect any personal data, site URLs, or user-identifiable information without your explicit consent. Email addresses are only collected when voluntarily provided and are never used for marketing.
For complete details on what data is collected, how it is stored (including hashing and encryption for email addresses), the legal basis under GDPR/CCPA, and your rights, please read our full privacy policy: 
https://robertwp.com/privacy-policy

RW WebP Converter Lite

A lightweight WordPress plugin that converts JPG and PNG images to WebP format in bulk and automatically converts newly uploaded images.

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 …

RW WebP Converter Lite vs JPrompt's Pixengine – Image Converter & Optimizer