DimitriAus

Manly WebP Converter converting images to the modern WebP format. For example, a shop with 1,000 products can see overall storage drop from around 15 GB to 6 GB. Page load times are reduced proportionally.
Features: 
– Convert images for one WooCommerce product or all media images. 
– Keep originals during testing or delete originals after conversion. 
– Updates attachment metadata and content references in posts, pages, and all other post types. 
– Shows progress, logs, and total bytes saved. 
– Adjustable WebP image quality — test on a single page or product first and verify picture quality visually before converting your entire library. 
– Conversion of thousands of pictures may take hours; you can stop at any time by clicking the Stop button and resume later by clicking Start again — already-converted images are skipped automatically. Refreshing or closing the page is also safe: each image is saved to disk as it is processed, so starting again after a page refresh will continue from where the conversion left off.
<h4>Requirements</h4>
This plugin requires the PHP GD extension, which is usually included with standard PHP installations. If GD is not already active on your server, it can be enabled in cPanel → PHP Configuration with a single tick.
<h4>Conversion Modes</h4>
Both modes convert attachments stored in the media library. The difference is scope:
<ul>
<li>Single Product — reads the featured image and gallery post meta of the chosen WooCommerce product and converts only those linked attachments.</li>
<li>All Images — queries every JPEG, PNG, and GIF attachment in the entire media library, regardless of whether it is attached to a product.</li>
</ul>
After each conversion, the plugin searches <code>post_content</code> and <code>post_excerpt</code> across every post type (posts, pages, products, custom post types) and rewrites both full URLs and path-only references. It does not update image URLs stored in post meta or custom fields (e.g. page-builder block attributes saved outside the content column).
WooCommerce product images are safe because featured images and gallery images are stored as attachment IDs, not URLs — WordPress resolves them dynamically from the updated attachment record.
Warning: page builders and URL-based custom fields. Tools such as Elementor, Divi, Beaver Builder, and ACF (when set to return a URL) store image URLs directly in post meta. These are not rewritten by this plugin. If you then delete the original files, any such stale URL will point to a missing file and cause broken images on the front end.
Recommended workflow: 
1. Run the conversion with Keep Originals enabled. 
2. Check your site visually — especially pages built with a page builder. 
3. Only disable Keep Originals (to delete originals) once you are confident no post meta or theme option holds a raw image URL that has not been updated.
<h3>Additional Information</h3>
This plugin is primarily designed for WooCommerce stores. While the All Images mode covers the entire media library, the core workflow and Single Product mode are built around WooCommerce product images. More detailed guidance will be added in a future update.

Manly WebP Converter

Reduces server space and page load times by converting WordPress and WooCommerce images to WebP format.

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.

Manly WebP Converter vs GioCompress