David Degner

<p>AVIF Local Support adds modern AVIF image support to WordPress while keeping compatibility with existing JPEG media.  Built by a <a href="https://www.daviddegner.com" rel="nofollow ugc">Boston photographer</a> who needs it for their own portfolio website.</p>
<p><strong>GitHub Repository:</strong> <a href="https://github.com/ddegner/avif-local-support" rel="nofollow ugc">https://github.com/ddegner/avif-local-support</a></p>
<ul>
<li>Local-first: all processing happens on your own server — no external calls.  Works well for me on a shared CPU with 2GB of RAM on Linode.</li>
<li>Image quality first: uses Imagick PHP and CLI when available for high-quality resizing (LANCZOS), corrects EXIF orientation, and preserves ICC color profiles and EXIF/XMP/IPTC metadata when possible.</li>
<li>Tunable quality and speed: set AVIF quality (0–100) and encoder speed (0–10) to balance fidelity and performance.  You can even adjust choose chroma subsampling (4:2:0, 4:2:2, 4:4:4) and bit depth (8/10/12-bit). Defaults: 4:2:0 and 8-bit if your server supports it and you want higher quality images.</li>
<li>Wraps existing <code><img></code> tags in <code><picture></code> with an AVIF <code><source></code> when an <code>.avif</code> version is present.</li>
<li>Converts JPEG originals and generated sizes to AVIF on upload, or via a daily/background scan.</li>
<li>Preserves EXIF/XMP/IPTC metadata and ICC color profiles by default (when using ImageMagick/Imagick).</li>
<li>WordPress-aware resizing logic enabled by default to avoid double-resizing when generating AVIF sizes from originals.
<ul>
<li>Tools include: convert missing AVIFs, upload a test JPEG, and delete all AVIF files in uploads.</li>
</ul>
</li>
</ul>
<h4>How it works</h4>
<ul>
<li>Front end: Filters common image outputs to add an AVIF <code><source></code> ahead of the original JPEG. Browsers that support AVIF will use it; others fall back to JPEG.</li>
<li>Conversion: Uses Imagick when available (preferred) — with auto-orientation and LANCZOS resizing — or GD with an AVIF encoder. Quality, speed, chroma subsampling, and bit depth are configurable (subsampling/bit depth applied via Imagick when supported).</li>
<li>Scheduling: Optional daily scan to backfill missing <code>.avif</code> files for existing JPEGs.</li>
</ul>
<h4>Requirements</h4>
<ul>
<li>PHP 8.0 or later (8.1+ recommended)</li>
<li>WordPress 6.5 or later</li>
<li>Imagick PHP extension recommended for best quality and metadata/ICC preservation. GD fallback supported.</li>
</ul>
<h3>Ubuntu/Debian setup (summary)</h3>
<p>For local JPEG<span aria-hidden="true" class="wp-exclude-emoji">→</span>AVIF conversion you need either Imagick with AVIF-enabled ImageMagick, or GD with AVIF support:</p>
<ul>
<li>
<p>Imagick path (recommended)</p>
<ul>
<li>PHP extension: imagick</li>
<li>System libraries: ImageMagick built with HEIF/AVIF support (via libheif)</li>
<li>Notes: This path enables higher-quality resizing and preserves metadata/ICC profiles</li>
</ul>
</li>
<li>
<p>GD path (fallback)</p>
<ul>
<li>PHP extension: gd built with AVIF support (provides <code>imageavif</code> on PHP 8.1+)</li>
<li>Notes: Ensure your distro’s PHP GD is compiled with AVIF; some builds omit it</li>
</ul>
</li>
<li>
<p>Helpful extras</p>
<ul>
<li>PHP exif extension (for orientation handling in the GD fallback)</li>
<li>Web server configured to serve <code>.avif</code> as <code>image/avif</code> (Apache/Nginx/LiteSpeed)</li>
</ul>
</li>
</ul>
<p>Official documentation:<br />
– PHP Imagick installation: https://www.php.net/imagick<br />
– PHP GD installation (AVIF details): https://www.php.net/manual/en/image.installation.php<br />
– ImageMagick format support (AVIF/HEIF): https://imagemagick.org/script/formats.php<br />
– Apache MIME configuration: https://httpd.apache.org/docs/current/mod/mod_mime.html<br />
– Nginx MIME configuration: https://nginx.org/en/docs/http/ngx_http_types_module.html</p>


AVIF Local Support

AVIF support for converting and serving high quality photos. Built by a photographer, not trying to sell subscriptions.

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.

AVIF Local Support vs ImageEngine – Optimize the Images on Your WordPress Site Like No Other Plugin