WordPress Directory

Best Resize WordPress Plugins

5 plugins · 1.6M combined installs · 4.7/5 avg rating

Image resize plugins for WordPress address the common problem of oversized uploaded images consuming excess disk space and slowing page loads by automatically scaling down image dimensions on upload, regenerating thumbnails to match current theme requirements, or compressing image files using lossy and lossless algorithms. When themes change or new image sizes are registered, resize plugins can bulk-regenerate the entire media library's thumbnail set so all stored images conform to the latest specifications without manual reprocessing. Developers switching themes, site administrators cleaning up after years of poorly sized image uploads, and performance engineers auditing a site's payload size are the main users. The most comprehensive resize plugins combine dimension scaling with format conversion — outputting WebP or AVIF versions alongside the original JPEG or PNG — to maximise both visual quality and file size reduction.