Rafał Dziewa

<p>DZIEWA Media Converter creates sidecar <code>.avif</code> and <code>.webp</code> files next to your originals (no replacement of JPG/PNG in the Media Library). On the front end it can rewrite <code><img></code> tags to <code><picture></code> so browsers pick AVIF/WebP when available. The plugin is <strong>entirely free to use</strong> — no license fees, no pro version, and no paid add-ons.</p>
<h4>How it works</h4>
<p>The plugin generates additional AVIF and/or WebP files beside every JPEG/PNG you upload. Originals are never touched or replaced — they remain in the Media Library and on disk as a safe fallback. The optional content filter detects <code><img></code> tags in your post content and wraps them in <code><picture></code> so modern browsers download the smaller AVIF/WebP version, while older browsers transparently fall back to JPG/PNG.</p>
<h4>Conversion</h4>
<ul>
<li><strong>AVIF + WebP, AVIF-only or WebP-only</strong> output modes. AVIF requires PHP GD built with AVIF support; the plugin auto-detects this on activation and gracefully falls back to WebP-only when AVIF is unavailable.</li>
<li><strong>Configurable quality</strong> per format (independent AVIF and WebP quality sliders in settings).</li>
<li><strong>Automatic conversion on upload</strong> — new attachments are converted in the background via WP-Cron or Action Scheduler (when available), so the upload screen never blocks.</li>
<li><strong>Intermediate sizes (thumbnails)</strong> are optionally converted too, so every srcset variant has its own AVIF/WebP sidecar.</li>
</ul>
<h4>Existing media</h4>
<ul>
<li><strong>Background queue</strong> processes already-uploaded images in configurable batches (default 20 files per run, range 5–200). You can scope the queue to a single uploads subfolder and/or a date range to avoid scanning the whole library at once.</li>
<li><strong>Bulk action in the Media Library</strong> — select images and run <strong>Convert to AVIF/WebP</strong> from the bulk menu.</li>
<li><strong>Per-attachment button</strong> — Media Library list, attachment edit screen and media modal each show a <strong>Convert to AVIF/WebP</strong> button next to live savings stats (before/after size, percentage saved per format).</li>
</ul>
<h4>Front end (content rewriting)</h4>
<ul>
<li>Optional <code><picture></code> rewrite in <code>the_content</code> and post thumbnails — browsers automatically pick the lightest format they support.</li>
<li>Lookup of attachment IDs from URLs is cached in the WordPress object cache (Redis/Memcached when available) and memoised per request, so heavy pages with many images stay fast.</li>
</ul>
<h4>Tools & admin UI</h4>
<ul>
<li><strong>Cleanup tool</strong> — remove old generated <code>.avif</code> / <code>.webp</code> sidecars by age (30/60/90/120 days) and folder scope, with a per-folder picker.</li>
<li><strong>Admin bar download</strong> — optional link on singular posts/pages to download the original JPG/PNG of the featured image (useful for social platforms that don’t accept AVIF/WebP).</li>
<li><strong>Event log</strong> — last 100 events (errors, conversions, queue runs) visible on the settings page.</li>
<li><strong>Three-option uninstall dialog</strong> — when removing the plugin you choose between <em>Cancel</em>, <em>Remove (keep generated files)</em> or <em>Remove and delete files</em>.</li>
</ul>
<h4>Privacy & dependencies</h4>
<ul>
<li>No external services, no remote calls, no tracking. Everything runs on your own server.</li>
<li>Requires PHP 8.3+ and PHP GD with WebP support (<code>imagewebp</code>). AVIF is optional.</li>
<li>Fully translated to Polish; English source strings ready for further translations via GlotPress.</li>
</ul>


DZIEWA Media Converter — AVIF + WebP

Converts JPEG/PNG to AVIF and WebP; rewrites content to <picture> with JPG/PNG fallback. Completely free, no paid version.

ImageEngine

<p>Welcome to ImageEngine, the ultimate image optimization plugin for WordPress. Our sophisticated tool goes beyond conventional optimization techniques to deliver unparalleled performance enhancements to your website. Utilizing proprietary device detection technology, ImageEngine ensures that every image is perfectly optimized for every device that visits your site and then delivers them via our global image content delivery network (CDN).</p>
<p>If you want to see the performance improvements for yourself before installing this plugin, you can test any website for free <a href="https://imageengine.io/test/?utm_source=wordpress.org&utm_medium=page&utm_term=wp-imageengine&utm_campaign=wp-imageengine" rel="nofollow ugc">on our website</a>. Like what you see? We also offer a <a href="https://imageengine.io/free/?utm_source=wordpress.org&utm_medium=page&utm_term=wp-imageengine&utm_campaign=wp-imageengine" rel="nofollow ugc">30-day trial</a> to all new users.</p>
<h4>Key Features of ImageEngine:</h4>
<ul>
<li>Automatic Optimization: Effortlessly reduces image sizes by up to 80%, significantly speeding up page loading times on every device.</li>
<li>Advanced Format Support: Automatically serves the best image format (WebP, JPEG XL, JPEG 2000, or AVIF) from a global CDN, ensuring optimal performance.</li>
<li>Customizable Settings: Easily configure which WordPress directories to include, define excluded directories or extensions, and toggle HTTPS support.</li>
<li>Seamless Integration: Works harmoniously with WordPress Cache Enabler, WooCommerce, Gutenberg, and major WordPress page builders like Elementor, Divi, and ThriveThemes.</li>
<li>Enhanced Web Performance: Lower your website’s bounce rates and improve SEO by optimizing over 60% of your site’s content – its images.</li>
<li>Supports ImageEngine Directives: Fine-tune image quality, format conversion, and resizing directly through ImageEngine’s directive settings.</li>
<li>Third-Party CDN Support: Using an existing CDN? ImageEngine works seamlessly with top Content Delivery Networks (CDNs) for fast, worldwide image delivery.</li>
</ul>
<h3>Why ImageEngine?</h3>
<p>Developed for simplicity, ImageEngine is designed for WordPress developers and users looking to enhance their website’s performance with minimal effort. Our unique value proposition lies in our device detection technology, which giants such as Google and Amazon use to ensure your images are optimized for any device, anywhere.</p>
<h3>What Our Customers Are Saying:</h3>
<ul>
<li>“With ImageEngine, our webpage response time dropped to less than 2 seconds for 90% of our pages.” – A satisfied customer</li>
<li>“Simple setup, great results. I appreciate the easy implementation and solid reliability of ImageEngine.” – Happy user.</li>
<li>“An excellent product with even better support. ImageEngine was a clear leader in Page Speed performance upgrades.” – Grateful client.</li>
</ul>
<p>See more of our reviews on G2.com.</p>
<h3>Guided Onboarding:</h3>
<p>No developer? No problem! We have a guided onboarding video to get you started. Unlike other tools, we also offer US-based onboarding support to help set ImageEngine up on your site if you run into any snags.</p>
<p>Watch our onboarding video:</p>
<p><iframe loading="lazy" title="How to Create an ImageEngine Account Within the WordPress Plugin – Step-by-Step Guide" src="https://player.vimeo.com/video/1040925255?dnt=1&app_id=122963" width="750" height="422" frameborder="0" allow="autoplay; fullscreen; picture-in-picture; clipboard-write"></iframe></p>
<h3>Get Started with ImageEngine Today:</h3>
<p>Elevate your WordPress site with ImageEngine. Say goodbye to slow loading times and hello to a smooth, fast, and engaging user experience. Join us and redefine image optimization.</p>
<h3>System Requirements</h3>
<ul>
<li>PHP >=7.4</li>
<li>WordPress >=5.3</li>
</ul>
<h3>Author</h3>
<ul>
<li><a href="https://imageengine.io/?utm_source=wordpress.org&utm_medium=page&utm_term=wp-imageengine&utm_campaign=wp-imageengine" rel="nofollow ugc">ImageEngine</a></li>
</ul>
<blockquote>
<p>Note: this plugin was based on the <a href="https://github.com/keycdn/cdn-enabler" rel="nofollow ugc">CDN Enabler</a> plugin, but has diverged and will not track it.</p>
</blockquote>


ImageEngine – Optimize the Images on Your WordPress Site Like No Other Plugin

I was looking for something like this, thanks for making it available for all CDN, even though i am not using it for image engine, it works superb, does what it says, please keep it open for all.

Simple & Awesome

Automatically optimize and serve WEBP, AVIF and JPEGXL with ImageEngine, the global Image CDN. 60 sec setup.

DZIEWA Media Converter — AVIF + WebP vs ImageEngine – Optimize the Images on Your WordPress Site Like No Other Plugin