Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
Alternatives to Slimify
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Automatically compress JPEG, PNG, and WebP images on upload. Reduce file sizes up to 80% without visible quality loss.
Pewit AI Image Optimizerv1.1.3.3
Smart JPEG/PNG compression with WebP/AVIF sidecars, AV1 WebM video sidecars (ffmpeg) and backup-first bulk jobs (Pro).
Compress images in your browser before uploading. Your images never go through third-party servers.
FlipWebPv1.0.3
Convert Media Library images to WebP and reduce their file size, one at a time or in bulk.
Speed up your website. Optimize your JPEG, PNG, and WebP images automatically with TinyPNG.
Optimize every image in your Media Library in one click. Originals are always kept safe, and WebP/AVIF versions are served automatically.
Image Optimizer is an easy-to-use WordPress plugin that reduces image size through various compression and resizing techniques – all of which preserve …
Automatically convert uploaded images (PNG, JPG, JPEG) to WebP format to enhance website performance and reduce load times.
PixCompressv1.4.9
Compress JPEG, PNG, WebP, and GIF in the media library without changing URLs. Originals are backed up so you can restore anytime.