Avif Express vs Shrinkwell Image Optimizer

On upload, images like jpg, png and WebP gets converted to avif format. Converted images get served on web pages. Feature list Images get converted on upload. Bulk convert previously uploaded images. Schedule Bulk convert in the background. Bulk convert theme images. Local Conversion Cloud Conversion (Freemium) Serve Webpage with altered avif images. Fully CDN compatible. Backward compatibility – Browsers that don’t support Avif images will get Original images served on-the-fly. Native Language Support for German, Spanish, Russian, French, Hindi and Bengali. Official documentation of Avif Express For a more detailed description of options and features of Avif Express, please read the official documentation.

No account. No API. No images leaving your server. Shrinkwell helps you compress images, convert them to modern formats and reduce backup size by finding possibly unused media in your WordPress database. Processing stays local, with no media files uploaded externally for optimization. Run a 5-image test, review the results, then optimize your full media library with more confidence. Built for agencies and freelancers handing off client sites Shrinkwell was designed for the moment before you hand a site back to a client and need to prove the optimization work was actually done. Safe test run — optimize 5 images first and inspect the results before touching the full library. Original backups — keep originals before files are replaced, then restore individual images or the full library when needed. Delivery proof — scan a live page URL and confirm that WebP files are actually being served, not just generated. SEO scan — find missing alt text and weak filenames without auto-rewriting anything. Compression that doesn’t guess Choose a named compression profile or dial in your own settings: Balanced — solid savings with sensible quality preservation. Good for most sites. High — stronger reduction. Best for image-heavy sites where speed matters most. Near lossless — minimal quality change. Useful for portfolios and product photography. Custom — a 1–10 strength slider for full control. Shrinkwell can generate WebP automatically and serve it with a safe JPEG/PNG fallback, with no .htaccess edits and no CDN required. What you get in the free version Convert images to WebP and AVIF within the monthly free limit Manually bulk-optimize JPEG and PNG within the monthly free limit Preserve existing WebP media items instead of recompressing them Resize oversized images to a maximum width and height Strip EXIF/metadata where supported Optimize thumbnails alongside originals Generate and serve WebP with automatic JPEG/PNG fallback Restore individual images or run a bulk restore Run a Media Cleanup database scan and preview possibly unused images Review an optimization log with bytes saved, skipped images, and skip reasons Run a frontend delivery test to confirm active WebP delivery Run a site scan and apply recommended settings in one click Works with GD and Imagick, with no external service required Shrinkwell Pro Shrinkwell Pro unlocks unlimited optimization and safe Media Cleanup. That includes unlimited WebP and AVIF optimization, auto-optimize on upload, background bulk optimization, safe bulk cleanup actions, Shrinkwell Trash and advanced cleanup tools. What Shrinkwell doesn’t do Shrinkwell does not send media files to an external API for optimization, require an account, charge per image, or rewrite alt text or filenames automatically. Privacy Images are optimized on your own server. The free plugin does not transmit media files externally for optimization. License & Assets Shrinkwell is licensed under GPLv2 or later. The included Shrinkwell logo and wordmark are original Levmedia brand assets and are distributed with this plugin under GPLv2 or later.