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.

Mustafa Uysal

poweredcache

<p><strong>Image Optimizer Pro</strong> is your ultimate solution to optimize images efficiently. Designed for WordPress users, it automatically converts and serves images in AVIF or webp format where the browser supports, ensuring faster load times and enhanced user experience.</p>
<h4>Key Features</h4>
<ul>
<li>
<p><strong>On-the-fly Image Optimization</strong>: No need to manually convert each image. Image Optimizer Pro does it for you!</p>
</li>
<li>
<p><strong>Serve in AVIF or WebP</strong>: Utilize the latest image formats for faster loading and better performance.</p>
</li>
<li>
<p><strong>Global Network Distribution</strong>: Images are distributed on our extensive global network, ensuring they are served swiftly to your visitors, no matter where they are.</p>
</li>
</ul>
<p><strong>Documentation</strong>: <a href="https://docs.poweredcache.com/image-optimization/" rel="nofollow ugc">https://docs.poweredcache.com/image-optimization/</a></p>
<p><strong>Please note</strong>: This plugin requires an active license key for operation. Users can utilize their existing <a href="https://poweredcache.com/pricing/" rel="nofollow ugc">Powered Cache Premium</a> license key or purchase a standalone license at <a href="https://poweredcache.com/pricing/image-optimizer/" rel="nofollow ugc">Image Optimizer Pro Plans</a> page.</p>
<h4>Contributing & Bug Report</h4>
<p>Bug reports and pull requests are welcome on <a href="https://github.com/poweredcache/image-optimizer-pro/" rel="nofollow ugc">Github</a>.</p>
<p><strong>If you like Image Optimizer PRO, then consider checking out our other projects:</strong></p>
<ul>
<li><a href="https://poweredcache.com/" rel="friend nofollow ugc">Powered Cache</a> – Caching and Optimization for WordPress – Easily Improve PageSpeed & Web Vitals Score</li>
<li><a href="https://handyplugins.co/magic-login-pro/" rel="friend nofollow ugc">Magic Login Pro</a> – Easy, secure, and passwordless authentication for WordPress.</li>
<li><a href="https://handyplugins.co/easy-text-to-speech/" rel="friend nofollow ugc">Easy Text-to-Speech for WordPress</a> – Transform your textual content into high-quality synthesized speech with Amazon Polly.</li>
<li><a href="https://handyplugins.co/handywriter/" rel="friend nofollow ugc">Handywriter</a> – AI-powered writing assistant that can help you create content for your WordPress.</li>
<li><a href="https://handyplugins.co/paddlepress-pro/" rel="friend nofollow ugc">PaddlePress PRO</a> – Paddle Plugin for WordPress</li>
<li><a href="https://handyplugins.co/wp-accessibility-toolkit/" rel="friend nofollow ugc">WP Accessibility Toolkit</a> – A collection of tools to help you make your WordPress more accessible.</li>
</ul>
<h3>Privacy Policy and Third-Party Service Disclosure</h3>
<p>Our plugin, <strong>Image Optimizer Pro</strong>, enhances website performance by optimizing and distributing images via a third-party service, <a href="https://poweredcache.com/" rel="nofollow ugc">Powered Cache</a>.<br />
This collaboration is essential for functionalities like on-the-fly image optimization and global network distribution.</p>
<p>In addition to optimizing images, our service includes verifying website addresses and license keys against our API endpoint. This verification is conducted to ensure that each website is eligible to use our services.</p>
<p>As part of these processes, standard visitor information, such as IP addresses, may be collected, and we ensure the protection of user privacy and data.</p>
<p>For detailed insights into how data is handled by Powered Cache, and to understand the terms under which the service operates, please review the following:<br />
– <a href="https://poweredcache.com/privacy/" rel="nofollow ugc">Privacy Policy</a><br />
– <a href="https://poweredcache.com/tos/" rel="nofollow ugc">Terms of Service</a></p>


Image Optimizer PRO – Optimize Images, Convert AVIF & WebP

Optimize and serve your images in AVIF or webp format on-the-fly, boosting site performance and decreasing load times with our network distribution.

DZIEWA Media Converter — AVIF + WebP vs Image Optimizer PRO – Optimize Images, Convert AVIF & WebP