Unlimited image optimization on your own server: compression, WebP and AVIF, lazy load, alt text, thumbnails and safe SVG. No credits or API keys.
Alternatives to WBN Image Optimizer – SaaS-Grade Image Optimization
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.
Compress, resize and convert WordPress images directly in your browser, without an external image-processing service. Free. No API key.
Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
Convert and compress images to WebP and AVIF on your own server. No limits, no account, and your originals stay safe.
PixGrow Image Optimizerv1.1.0
Free browser-based WordPress plugin to compress images and convert to WebP. No API key, zero server load, unlimited bulk image optimization.
Compress WordPress images, convert to WebP and AVIF, reduce file sizes, improve page speed, and boost Core Web Vitals.
Convert JPEG, PNG & GIF to WebP and bulk-optimize your Media Library entirely on your own server. No external services. No data sent. No quotas.
Compress images to WebP/AVIF for free — locally with PHP-Imagick, otherwise converted by fepo. Fonts subsetted by fepo (uses credits).
Unlimited, free image compression to WebP/AVIF — done entirely in the editor's browser before upload. No server load, no API keys, no limits.
Image Weight Guardv1.0.0
Convert new and existing images to optimized WebP, and stop oversized images with a one-click "Optimize & Upload" prompt.