First 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optimization score, library savings, bulk optimization and recent activity.","2":"Compression settings with backups and one-click restore.","3":"WebP and AVIF: keep originals or convert to WebP, optional AVIF copies, delivery mode, delivery test and Nginx snippet.","4":"Performance: lazy load, LCP priority, layout shift fix and video previews.","5":"Thumbnails: every image size with disk usage, custom sizes and regeneration with live results.","6":"Modules: every feature can be switched off.","7":"Alt text: fill missing alt text in bulk and edit alt text for every image in one 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EmergentPixel Image Optimizer replaces the handful of image plugins most sites run with one modular plugin. Everything runs on your own server: your images never leave it, there are no credits, no monthly limits and no API keys.<\/p>\n\n
Compression<\/strong><\/p>\n\n WebP and AVIF<\/strong><\/p>\n\n Faster pages (Core Web Vitals)<\/strong><\/p>\n\n Media tools<\/strong><\/p>\n\n Every feature is a module you can switch off. A switched-off module adds no code to your site.<\/p>\n\n Pro (planned)<\/strong><\/p>\n\n A Pro add-on is planned. It will add blur placeholders, CSS background-image lazy loading, media cleanup and more. The free plugin is complete on its own and will never be limited.<\/p>\n\n The plugin does not connect to any service by default.<\/p>\n\n YouTube thumbnails (optional).<\/strong> When you turn on \"YouTube and Vimeo preview\" in Performance, YouTube videos that are already embedded in your content show a preview image until the visitor clicks play. The preview image is loaded by the visitor's browser from YouTube ( The admin screens are built with WebP delivery:<\/strong> WebP is served out of the box, on every server: image tags point at the .webp files. For server-side delivery on Nginx, copy the snippet from EmergentPixel Image Optimizer \u2192 WebP & formats<\/strong> into your Nginx configuration.<\/p>\n\n\n No. All processing uses the image libraries already on your server (Imagick or GD). The plugin sends nothing to any external service. The only request it makes itself is the \"Test delivery\" check, which loads a test image from your own site when you click it. See \"External services\" below for the optional video preview.<\/p><\/dd>\n No. There are no quotas, credits or file size plans.<\/p><\/dd>\n Before the first optimization the original is copied to Yes. The plugin works with GD on PHP 7.4 and uses Imagick automatically when it is available, for better results. The Dashboard shows what your server supports.<\/p><\/dd>\n Optimization runs in the background in small batches. On the front end, the plugin adds no JavaScript or CSS by default, and processes a page with 200 images in a few milliseconds.<\/p><\/dd>\n Background work runs through WP-Cron and a request from your site to itself. Some hosts block these. EmergentPixel Image Optimizer notices when jobs are not picked up and then runs them while you use the admin, so uploads and bulk optimization still finish. Tools & logs \u2192 System status shows it under \"Background jobs\". To run jobs with no admin open, add a server cron job that calls That works. The default delivery links the WebP files in the page itself, so it works with any page cache and CDN. If you switch to rewrite rules, your CDN must respect the \"Vary: Accept\" header. Clear your page cache and CDN cache after changing the delivery mode or replacing a file.<\/p><\/dd>\n The Dashboard lists active plugins that do the same work (for example two lazy loaders) and lets you switch off the overlapping module with one click. EmergentPixel Image Optimizer never deactivates other plugins.<\/p><\/dd>\n Nothing, unless you turn on \"Remove all plugin data on delete\" in Tools. WebP copies and backups each have their own option, so your original images are never removed by accident.<\/p><\/dd>\n\n<\/dl>\n\n\n\n
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<picture><\/code> tags, rewrite rules or the Nginx snippet.<\/li>\n<img><\/code> tags whose src<\/code> and srcset<\/code> point at the .webp files, on any server, page cache and CDN, including images your theme or ACF fields output. Choose <picture><\/code> tags if you also want a JPEG fallback for very old browsers. Rewrite rules (Apache, LiteSpeed) and a ready-made Nginx snippet are available too. A \"Test delivery\" button checks that it works.<\/li>\n\n
fetchpriority=\"high\"<\/code> (LCP).<\/li>\n\n
External services<\/h3>\n\n
https:\/\/i.ytimg.com\/vi\/<video id>\/hqdefault.jpg<\/code>); this sends the visitor's IP address and the video ID to YouTube. Nothing loads from YouTube or Vimeo before that, so this replaces the full player that would otherwise load on every page view. YouTube is provided by Google: Terms of Service<\/a>, Privacy Policy<\/a>.<\/p>\n\nSource code<\/h3>\n\n
@wordpress\/scripts<\/code>. The readable source is included in the plugin under assets\/src\/<\/code>. To rebuild assets\/build\/<\/code>, run npm install<\/code> and npm run build<\/code> in the plugin folder.<\/p>\n\nThird-party libraries<\/h3>\n\n
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Do my images leave my server?<\/h3><\/dt>\n
Is there a limit on the number of images?<\/h3><\/dt>\n
What happens to my original images?<\/h3><\/dt>\n
wp-content\/uploads\/epim-backups\/<\/code>. You can restore any image, or delete all backups from the Compression screen once you are happy with the results.<\/p><\/dd>\nMy host only has GD. Will it work?<\/h3><\/dt>\n
Will it slow down my site?<\/h3><\/dt>\n
Images stay \"waiting\" on my host.<\/h3><\/dt>\n
wp-cron.php<\/code> every few minutes.<\/p><\/dd>\nI use a caching plugin or CDN.<\/h3><\/dt>\n
Does it conflict with other image plugins?<\/h3><\/dt>\n
What is removed when I delete the plugin?<\/h3><\/dt>\n
1.0.0<\/h4>\n\n
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