How to convert AVIF to JPG
- Drop an
.aviffile into the box above, choose one, or paste an image. - JPEG is already selected. Choose PNG instead if the image has a transparent background.
- Select Download to save the JPG.
Where AVIF files come from
AVIF arrived in 2019 and spread quickly on the web: news sites, shops and image services send AVIF to browsers that support it because it's even smaller than WebP. Save one of those images, or export from newer phones and editors, and you may end up with an .avif file that many desktop apps, upload forms and older phones can't open.
AVIF compared
| Format | Size for the same photo | Support |
|---|---|---|
| AVIF | Smallest | Modern browsers; patchy in apps |
| WebP | Small | Modern browsers; most web platforms |
| JPG | Largest of the three | Everywhere |
How it works
Your browser decodes the AVIF itself, then the pixels are drawn on a canvas and handed to MozJPEG at quality 85, or whatever you set on the slider. AVIF can store 10 or 12 bits per colour; the canvas works in 8 bits, which is also all a JPG can hold, so very smooth gradients from an HDR or high-bit-depth AVIF may show faint steps. Transparent areas are filled with white first, since JPG has no transparency. If an AVIF won't open at all, the browser may be too old to decode AVIF; updating it usually fixes that.
Common uses
- Saved an image that won't open. Images saved from some websites download as .avif files. Convert them to JPG to open them in older photo viewers, editors and office apps.
- An upload form says JPG only. Marketplaces, forums and application forms rarely list AVIF among the formats they accept. Convert to JPG and the upload goes through.
- Sending to someone on an older device. Older phones and computers may show an AVIF as an unknown file. Send a JPG instead so it opens wherever they view it.