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Drop AVIF images here or click to browse

Processed entirely in your browser. Never uploaded to a server.

AVIF is what a lot of sites now serve images as, which means it's what you get when you save a picture from one. It opens fine in any browser and then refuses to open in half the software on your machine. Converting to JPG trades the file size back for compatibility.

Decoding happens on your device

The AVIF decoder is a WebAssembly build of libavif, downloaded once on your first conversion and then cached by the browser. It's a couple of megabytes, so the first file takes a moment longer than the rest. Nothing about your image is sent anywhere.

FAQ

Why can't I open my AVIF file?
Browsers all display AVIF, but plenty of desktop software still doesn't read it — older Windows builds without the AV1 Image Extension, most email clients, and a lot of photo editors and print services. Files saved from a website are the usual way people end up with one they can't open.
Will the JPG look worse than the AVIF?
It's a fresh lossy encode of an already-lossy image, so a second generation of compression artifacts is added on top of whatever the AVIF already had. At normal viewing sizes that's rarely visible, but don't repeat the round trip more than you have to.
What happens to transparency?
AVIF supports an alpha channel and JPG doesn't. Transparent areas are flattened onto black. If your image has transparency you want to keep, convert to PNG instead — the Compress Image tool accepts AVIF and will keep it lossless if you re-encode as PNG.
Why is the JPG so much bigger?
That's expected. AVIF is roughly a generation ahead of JPEG on compression efficiency, so the same picture typically needs several times more bytes as a JPG. You're trading file size for the ability to open it anywhere.

Going the other way, for a website? Try JPG to AVIF.

Need the JPG smaller, or a specific size? Try Compress Image or Resize Image next.

Curious what makes AVIF different from JPG? Read AVIF explained. Wondering why an AVIF file won't open somewhere? Read where AVIF is and isn't safe to use.