Convert 30+ image formats to AVIF in bulk. 100% private, client-side processing with no file uploads. Free, unlimited, and no registration required. Optimize your web images instantly.
(Empty for original size)
Drag & Drop Images (Max 20)
How to Convert Bulk Images to AVIF (100% Private)
Our universal converter is designed for speed, privacy, and high-performance web optimization. Follow these simple steps to transform your media library:
- Select Your Source Format: Use the dropdown menu to choose your input format (such as PNG, JPEG, SVG, or TIFF). If you have a mix of files, select “All Supported Formats.”
- Upload Your Files: Drag and drop up to 20 images into the upload area. Since our tool is 100% client-side, your files are never uploaded to a server—they stay safe on your device.
- Set Custom Dimensions (Optional): If you need to resize your images for specific web layouts, enter a Target Width. The height will automatically scale to maintain the original aspect ratio.
- Convert & Download: Click “Convert All to AVIF.” Our tool will process each image locally. Once finished, click the green “Download” button next to each file to save your optimized AVIF.
Why Use AVIF for Your Website?
If you are aiming for a 100/100 Google PageSpeed Insights score, AVIF is your best friend.
- Superior Compression: AVIF files are often 30% smaller than WebP and 50% smaller than JPEG while maintaining the same visual quality.
- Modern Browser Support: Chrome, Firefox, and Edge all support AVIF, making it the perfect choice for hero images and galleries.
- SEO Advantage: Faster load times lead to better Core Web Vitals, which is a direct ranking factor for Google in 2026.