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.