Free, zero-ad, unlimited local lossy image compression & WebP conversion.
Alternatives to Mass Resizer
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
Lightweight, privacy-first image optimization at upload time with local WebP conversion, AVIF-aware handling, and no external service.
Automatically convert images to WebP, reduce file size, and improve page speed and Core Web Vitals — no setup required.
Resize Media Library images with padding, social presets, bulk tools, create-new mode, safer replace mode and JPG/PNG/WebP export.
Automatically convert uploaded images to modern WebP format to reduce file size and improve website performance.
Convert, optimize, compress, and resize images locally. Create WebP, AVIF, JPEG, PNG, and text graphics without an external service.
Compress, resize and bulk-optimize WordPress images locally, with WebP/AVIF sidecars, backups, diagnostics and WP-CLI.
Automatically compress JPEG, PNG and GIF images on upload. Bulk optimize your media library, keep backups, and track savings per image.
A powerful, safe, and automated bulk image optimizer. Convert JPGs and PNGs to WebP, shrink dimensions, and automatically update content URLs.