Local WebP optimizer for WordPress. Free converts images to WebP; Pro adds AVIF and site-wide image tools.
Alternatives to Opti Ninja Image Optimizer – Compress Images, 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.
Optimize WordPress images with bulk compression, upload optimization, Media Library actions, and zero tracking.
Optimize images automatically — compress, resize and convert to WebP, AVIF & more with Kraken.io. Faster pages, smaller files, same quality.
Image optimization that works the moment you activate it. Compress and convert to WebP right on your site — no setup, no API keys, no limits.
Convert images to WebP and AVIF and compress them on your own server. No account, no API key, no image credits, and your images never leave your site.
The Ultimate Image Optimization Suite for WordPress. WebP & AVIF conversion, Smart Format Selection, Watermarking, and Lazy Load. Zero server load.
Speed up your website by using our WebP & AVIF Converter. Optimize images and serve WebP and AVIF images instead of standard formats!
The fastest WordPress image optimizer. Auto-convert JPEG, PNG, SVGs (if you allow) to WebP and compress images on upload.
All-in-one image optimization, WebP generation, Master Backup & 1-Click Restore, Filename-to-ALT generator, and Media Inspector Editor.
Compress images & PDFs automatically, convert to WebP & AVIF, and generate SEO-friendly filenames with AI. Bulk optimization, smart crop & resize.