David Degner

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.
GitHub Repository: <a href="https://github.com/ddegner/avif-local-support" rel="nofollow ugc">https://github.com/ddegner/avif-local-support</a>
<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>
For local JPEG→AVIF conversion you need either Imagick with AVIF-enabled ImageMagick, or GD with AVIF support:
<ul>
<li>
Imagick path (recommended)
<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>
GD path (fallback)
<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>
Helpful extras
<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>
Official documentation: 
– PHP Imagick installation: https://www.php.net/imagick 
– PHP GD installation (AVIF details): https://www.php.net/manual/en/image.installation.php 
– ImageMagick format support (AVIF/HEIF): https://imagemagick.org/script/formats.php 
– Apache MIME configuration: https://httpd.apache.org/docs/current/mod/mod_mime.html 
– Nginx MIME configuration: https://nginx.org/en/docs/http/ngx_http_types_module.html

AVIF Local Support

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

Giovanni Bevacqua

GioCompress is the lightweight yet powerful WordPress plugin designed to automatically optimize and convert your images into modern, web-friendly formats. It helps your website load faster without compromising visual quality, boosting your SEO scores and user experience.
GioCompress offers both a Free version with essential optimization features and a PRO version for advanced control and maximum performance.
<h3>🚀 Key Features (Free Version)</h3>
With GioCompress (Free version), your site gets an immediate boost in speed and better SEO:
<ul>
<li>Automatic Compression on Upload: Every image you upload is instantly optimized for the web.</li>
<li>Automatic WebP Conversion: Your images are automatically converted to the WebP format, ensuring superior performance and exceptional visual quality.</li>
<li>Optimization of Scaled Images: Even thumbnails and all various image sizes generated by WordPress are optimized.</li>
<li>Delete Original File: By default, we keep only the optimized version to maximize disk space savings on your server.</li>
<li>Optimize Existing Images (5/day): Already have a site full of images? Start optimizing your existing galleries right away, with a limit of 5 images per day.</li>
<li>Smart Lazy Loading (SEO): Your images load only when they are visible to the user, significantly improving page speed and SEO ranking. It works on all images on your site, wherever they are inserted.</li>
<li>Generate Missing Alt Text (SEO): Unique in its class! The plugin automatically detects and generates the ALT attribute for images that are missing it or have an empty ALT (<code>alt=""</code>), drastically improving your SEO and site accessibility.</li>
</ul>
<h3>💎 GioCompress PRO – Unlock Maximum Performance</h3>
Upgrade to GioCompress PRO for total control and advanced features that take your image optimization to the next level:
<ul>
<li>Unlimited Optimization of Existing Images: No daily limits. Optimize your entire media library in one go!</li>
<li>Customizable Compression Quality: You decide the perfect balance between visual quality and file size for every compression type.</li>
<li>Automatic Resizing of Large Images: Giant photos will no longer slow down your site. The plugin automatically resizes them to ideal dimensions upon upload, saving space and bandwidth.</li>
<li>Full AVIF Format Support: Access the next-generation image format for even more aggressive optimization (requires the Imagick library installed on your server).</li>
<li>Lossy / Lossless Compression: Choose the compression mode that best suits your needs, for granular control over quality and file size (lossless compression is supported with Imagick).</li>
<li>Remove EXIF/IPTC Data: Automatically remove unnecessary metadata from images (like date, camera model, geo-tags) to further reduce file sizes and protect privacy (works with the Imagick library installed on your server).</li>
<li>Detailed Statistics and Space Saved: Keep track of how many images you’ve optimized and how much space you’ve saved on your server, with clear and intuitive reports.</li>
<li>Orphan Data Cleanup: Remove unused or “orphan” images and metadata from your media library to keep it clean, efficient, and performant.</li>
<li>Preserve Original File: If you prefer to keep a copy of the original JPEG/PNG file alongside the optimized version, the PRO option allows you to do so with a simple click.</li>
<li>Dedicated Email Support: Receive priority assistance directly from our expert team for any questions or issues.</li>
</ul>
<h3>⚙️ How It Works</h3>
Once activated, GioCompress works in the background completely automatically. It intercepts images uploaded to your site and processes them, optimizing and converting them into modern formats like WebP or AVIF. The optimized versions are then served on your site, guaranteeing quick loads and reduced bandwidth consumption. It’s a one-time setup, and then it does all the work for you!
<h3>🎯 Who Is GioCompress For?</h3>
<ul>
<li>Bloggers & Content Creators: For images that load instantly, captivating your audience.</li>
<li>E-commerce Stores: For fast and optimized product pages that boost conversions and enhance the shopping experience.</li>
<li>Businesses & Professionals: For a website that conveys speed, professionalism, and attention to detail.</li>
<li>Web Developers & Agencies: To optimize numerous client sites with a lightweight, robust, and cost-effective solution.</li>
<li>Anyone who wants to improve SEO and user experience on their WordPress site without compromising on quality or requiring advanced technical skills!</li>
</ul>

GioCompress

WordPress plugin for smart image optimization. Auto-converts to WebP, includes smart lazy loading, and generates missing alt text for better SEO.

AVIF Local Support vs GioCompress