Convert Images to AVIF
Convert images to highly compressed AVIF files in your browser using a local WebAssembly encoder.
Free Batch processing No upload
Drop images hereor paste from your clipboard
JPG, PNG, WebP, AVIF, HEIC & GIF · up to 60 MB eachThree simple steps
From heavy to ready in seconds
Choose AVIF quality
Encode and download locally
Designed for this job
Why this preset works
AVIF is suited to performance-focused websites and archives where smaller files matter. Encoding is computationally heavier but can achieve excellent results.
Best for Performance budgets Modern web delivery High-volume image libraries
Built for private work
Your images never visit our server.
Compression happens in this browser tab. There is no upload queue, cloud copy, image history, or account required.
Useful answers
Questions about avif converter
Is AVIF smaller than WebP?+
It often can be, depending on the image and chosen quality. Always compare the preview and output size for your content.
Why is conversion slower?+
The AVIF codec performs more work to achieve efficient compression, and this work runs on your device.
Does the AVIF encoder upload data?+
Yes. CompressMint processes images locally in your browser. Your photos are not uploaded to our servers, and refreshing the page clears the working session.