JPrompt's Pixengine — Image Converter & Optimizer
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.
Key Features
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
Perfect For
- E-commerce — Faster product page loading
- Photographers — Portfolio optimization
- Bloggers — Quick page loads, better SEO
- News Sites — Handle high-volume image uploads
- Agencies — Client site optimization
- Developers — Performance-first development
Performance Benefits
- 40-70% smaller file sizes compared to JPG/PNG
- Faster page load times — Better Core Web Vitals
- Improved SEO rankings — Page speed is a ranking factor
- Reduced bandwidth costs — Smaller files = less data
- Better mobile experience — Faster loads on slow connections
- Green hosting — Lower carbon footprint
How It Works
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
Technical Details
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
Privacy & Performance
- No external API calls
- All processing done on your server
- No data collection or tracking
- Minimal performance impact
- Asynchronous bulk conversion
- Progress tracking without page reload
Technical Specifications
Supported Formats
- Input: JPEG, JPG, PNG
- Output: WebP, AVIF
Compression Details
- Imagick: Method 6, lossy, auto-filter (WebP and AVIF)
- GD: Alpha blending, transparency preservation
- AVIF: Requires PHP 8.1+ or Imagick with AVIF support
- Metadata stripping: EXIF, color profiles, thumbnails
- Quality range: 1-100 (WebP: 70-80, AVIF: 60-70 recommended)
File Size Reductions
- WebP from JPEG: 40-60% reduction
- WebP from PNG: 50-70% reduction
- AVIF from JPEG: 50-70% reduction
- AVIF from PNG: 60-80% reduction
- Large images (>1920px): 60-85% reduction
Browser Support
- Chrome/Edge: Full WebP and AVIF support
- Firefox: Full WebP and AVIF support
- Safari: WebP 14+, AVIF 16+ (macOS Ventura, iOS 16)
- Opera: Full support
- IE/Legacy: Automatic fallback to JPG/PNG
Privacy Policy
This plugin does not: * Collect any personal data * Send images to external servers * Use cookies * Track users * Make any external API calls
Support
Community support via WordPress.org forums.
Credits
Developed by JPrompt.