Freemius

Harv

<p>Harvify Image Optimizer helps WordPress administrators convert Media Library images to modern WebP and AVIF formats without running heavy compression work inside PHP.</p>
<p>The plugin scans lightweight attachment metadata first, then your browser converts selected images in a small queue. Images are processed with Web Workers and OffscreenCanvas where available, uploaded back through authenticated WordPress REST API requests, and released from browser memory as each item finishes.</p>
<p>This client-side approach is designed for shared hosting environments where PHP memory limits and execution timeouts can interrupt large image optimization jobs.</p>
<h4>Key features</h4>
<ul>
<li>Convert JPEG, PNG, WebP, and AVIF source images to WebP or AVIF.</li>
<li>Scan one source format at a time so existing target-format images are not accidentally reprocessed.</li>
<li>Select a few images for a test run before processing the full queue.</li>
<li>Skip small files, very large images, selected upload paths, or filename patterns.</li>
<li>Deliver Pro sidecar variants through PHP picture tags when available.</li>
<li>Adjust quality and queue concurrency from the admin screen.</li>
<li>Save queue state in the browser with IndexedDB so work can resume after interruption.</li>
<li>Keep wp-admin responsive by doing conversion work in browser workers.</li>
<li>Process images locally in your browser without using an external optimization API.</li>
<li>Optional original-file deletion, disabled by default.</li>
</ul>
<h4>Privacy and external services</h4>
<p>Harvify Image Optimizer does not send images to a third-party compression service, load scripts from external CDNs, or track usage. Images are fetched by your browser from your own WordPress site and uploaded back to your own WordPress REST API.</p>
<p>AVIF encoding uses bundled WebAssembly encoder files. The current AVIF path uses the Apache-2.0 licensed @jsquash/avif single-thread encoder, with the earlier bundled wasm-avif encoder retained as a local fallback.</p>
<h4>Format testing</h4>
<p>If you want to experiment with AVIF conversion outside your WordPress Media Library first, you can use this browser-based test tool:</p>
<p><a href="https://conversores.online/en/avif-to-png-converter/" rel="nofollow ugc">AVIF to PNG Converter</a></p>


Harvify Image Optimizer for WebP and AVIF

Convert Media Library images to WebP or AVIF locally in your browser.

jprompt

<p><strong>Make your WordPress site blazing fast with Pixengine – The intelligent image converter and optimizer.</strong></p>
<p>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.</p>
<h4>Key Features</h4>
<p><strong>Automatic Conversion</strong><br />
* Auto-convert JPG and PNG uploads to WebP or AVIF<br />
* Choose WebP only, AVIF only, or both formats<br />
* Smart resizing for images over configurable width<br />
* Maintains aspect ratio automatically<br />
* Preserves transparency for PNG images<br />
* Converts all WordPress thumbnail sizes</p>
<p><strong>AVIF Support (New in 1.1.0)</strong><br />
* Next-generation AVIF format with superior compression<br />
* Up to 50% smaller files than WebP<br />
* Automatic browser detection and fallback<br />
* Requires PHP 8.1+ or Imagick with AVIF support</p>
<p><strong>Superior Compression</strong><br />
* Uses Imagick (when available) for best compression<br />
* Strips unnecessary metadata (EXIF, profiles)<br />
* Optimized settings for 40-70% file size reduction<br />
* Fallback to GD library with optimization<br />
* Separate quality controls for WebP and AVIF</p>
<p><strong>Lazy Loading (New in 1.1.0)</strong><br />
* Native browser lazy loading support<br />
* Exclude first N images (above-the-fold)<br />
* Improves initial page load performance<br />
* Works with post content, thumbnails, and attachments</p>
<p><strong>Responsive Images (New in 1.1.0)</strong><br />
* Automatic srcset optimization<br />
* Optional picture element wrapping<br />
* Format fallback: AVIF > WebP > Original</p>
<p><strong>Caching Integration (New in 1.1.0)</strong><br />
* Configurable cache headers via .htaccess<br />
* Browser caching for repeat visits<br />
* Immutable cache-control for static images</p>
<p><strong>Bulk Conversion</strong><br />
* Convert existing media library images<br />
* Keeps original files for compatibility<br />
* Automatic .htaccess configuration<br />
* Browser-based optimized image delivery<br />
* Progress tracking with detailed logging</p>
<h4>Perfect For</h4>
<ul>
<li><strong>E-commerce</strong> – Faster product page loading</li>
<li><strong>Photographers</strong> – Portfolio optimization</li>
<li><strong>Bloggers</strong> – Quick page loads, better SEO</li>
<li><strong>News Sites</strong> – Handle high-volume image uploads</li>
<li><strong>Agencies</strong> – Client site optimization</li>
<li><strong>Developers</strong> – Performance-first development</li>
</ul>
<h4>Performance Benefits</h4>
<ul>
<li><strong>40-70% smaller file sizes</strong> compared to JPG/PNG</li>
<li><strong>Faster page load times</strong> – Better Core Web Vitals</li>
<li><strong>Improved SEO rankings</strong> – Page speed is a ranking factor</li>
<li><strong>Reduced bandwidth costs</strong> – Smaller files = less data</li>
<li><strong>Better mobile experience</strong> – Faster loads on slow connections</li>
<li><strong>Green hosting</strong> – Lower carbon footprint</li>
</ul>
<h4>How It Works</h4>
<p><strong>New Uploads (Automatic):</strong><br />
1. Upload JPG or PNG image<br />
2. Plugin resizes if width > 1920px (configurable)<br />
3. Converts to WebP with optimized compression<br />
4. Strips metadata for smaller files<br />
5. Original deleted (saves storage)<br />
6. All thumbnails converted to WebP</p>
<p><strong>Existing Images (Bulk):</strong><br />
1. Click “Start Bulk Conversion”<br />
2. Converts all JPG/PNG in media library<br />
3. Keeps originals for compatibility<br />
4. Updates .htaccess for automatic WebP delivery<br />
5. Browsers that support WebP get optimized images<br />
6. Older browsers get original JPG/PNG</p>
<h4>Technical Details</h4>
<p><strong>Compression Methods:</strong><br />
* Primary: Imagick with method 6 (best compression)<br />
* Fallback: GD with alpha channel preservation<br />
* Automatic metadata stripping<br />
* Configurable quality settings (1-100)<br />
* Smart resizing with LANCZOS filtering</p>
<p><strong>WebP Options (Imagick):</strong><br />
* Method 6 compression (highest quality)<br />
* Lossy compression for better file sizes<br />
* Alpha quality 100 (perfect transparency)<br />
* Auto-filter optimization<br />
* Lossless option available</p>
<p><strong>Browser Compatibility:</strong><br />
* Automatic .htaccess rules for serving WebP<br />
* Fallback to original JPG/PNG for older browsers<br />
* Supports Chrome, Firefox, Edge, Safari 14+, Opera<br />
* Mobile browsers fully supported</p>
<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>
<p>This plugin does not:<br />
* Collect any personal data<br />
* Send images to external servers<br />
* Use cookies<br />
* Track users<br />
* Make any external API calls</p>
<h3>Support</h3>
<p>Community support via WordPress.org forums.</p>
<h3>Credits</h3>
<p>Developed by JPrompt.</p>


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 …

Harvify Image Optimizer for WebP and AVIF vs JPrompt's Pixengine – Image Converter & Optimizer