Best AVIF Converter
The best free AVIF converter creates and opens AVIF files in your browser. Convert JPG, PNG or WebP to AVIF and back, with no uploads.
The best AVIF converter encodes and decodes AVIF locally, giving you the smallest modern web photos without uploading them.
How it works
The short answer
The best AVIF converter creates AVIF files from JPG, PNG or WebP and opens AVIF back to other formats, all in your browser with no uploads. It gives you the smallest web photos while keeping your files private.
Why AVIF
AVIF uses modern AV1 compression to make photos dramatically smaller than JPG at similar quality, and smaller than WebP too. It is the most efficient format for web photos today, which is why modern sites adopt it.
Create AVIF
Convert JPG, PNG or WebP to AVIF to shrink your web images. Choose a quality setting and the codec runs locally on your device, so you can compare sizes before committing.
Open AVIF
Some software cannot display AVIF yet. Convert AVIF back to JPG or PNG when you need maximum compatibility, such as for email, print or an older system.
Privacy and speed
AVIF encoding runs in a browser web worker with a codec loaded locally. Your photo is never uploaded, so conversion stays fast and private even for large batches.
Frequently asked questions
What is the best free AVIF converter?
The best one is private and unlimited. The AVIF converters here run in your browser with no uploads.
Why convert to AVIF?
AVIF produces the smallest photos at similar quality, which makes websites load faster and saves bandwidth.
Can all browsers show AVIF?
All modern browsers support AVIF. Older browsers need a JPG or WebP fallback.
Is AVIF smaller than WebP?
Yes, typically 20 to 50 percent smaller for the same photo at similar quality.