What is AVIF?
AVIF is a newer image format based on the AV1 video codec. It can produce even smaller files than WebP at similar quality, so more websites are starting to serve it — which means you may end up with .avif files when saving images.
Support outside the browser is still patchy. Many photo editors, office apps, upload forms and older devices can't open AVIF at all.
We tested it: two AVIF photos
We converted two full-resolution AVIF photos (made from phone photos):
| Photo | AVIF | JPG | Resolution | Time |
|---|---|---|---|---|
| Pixel 2 photo | 968 KB | 2.73 MB | 3024×4032 | 0.8 s |
| Galaxy S7 photo | 579 KB | 1.87 MB | 4032×3024 | 0.7 s |
The JPGs are about 3× bigger. AVIF is one of the most efficient image formats available, so this is expected. The JPG is what you need for apps and forms that don't accept AVIF yet. If size matters, run the JPG through a compress-to-KB tool afterwards.
When converting helps
- Your image viewer or editor shows an error or a blank file.
- A form, marketplace or social site rejects the upload.
- You want to print the image or put it in a document.
Browser requirements
The conversion uses your browser's own AVIF support. Current versions of Chrome, Edge, Firefox and Safari all handle it; if you see an error, update your browser and try again.
Frequently asked questions
Will the JPG look the same?
Yes. We keep the full resolution and save at high quality. The JPG will usually be larger than the AVIF.
What happens to transparency?
Transparent areas become white, because JPG doesn't support transparency.
Is anything uploaded?
No — the image is decoded and converted inside your browser.