Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
Alternatives to SlashImage – Image Optimizer: Compress Images, Convert WebP & AVIF
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.
Image Weight Guardv1.0.0
Convert new and existing images to optimized WebP, and stop oversized images with a one-click "Optimize & Upload" prompt.
Speed up your website by using our WebP & AVIF Converter. Optimize images and serve WebP and AVIF images instead of standard formats!
Codcy Image Optimizerv1.6.3
Bulk convert JPEG and PNG images to WebP. No external service. Runs entirely on your server with automatic backup.
Unlimited image optimization on your own server: compression, WebP and AVIF, lazy load, alt text, thumbnails and safe SVG. No credits or API keys.
Unlimited image optimization - Auto optimize on upload, Bulk optimize, WebP & AVIF conversion. No API key, no monthly fee, no limits.
Convert images to AVIF & WebP on-server with true background queue. Boost page speed and Core Web Vitals with zero monthly SaaS fees.
Converts your images to WebP a little at a time, so even a cheap shared host can optimize a large media library without timeouts.
Image optimizer and WebP & AVIF converter: compress and resize images free on your own server, no account needed. Optional cloud adds video.
Compress WordPress images, convert to WebP and AVIF, reduce file sizes, improve page speed, and boost Core Web Vitals.