What AVIF to JPG does
AVIF is the newest web image format — half the size of JPG at the same quality — and websites increasingly serve it, so a right-click “Save image” now often produces a .avif file that Windows Photos, older Macs, Office, Photoshop before 2023 and most upload forms refuse. This tool decodes the AVIF with your browser's built-in decoder and saves it as a JPG at the quality you choose. Several files convert at once into a ZIP. Nothing is uploaded.
AVIF vs JPG
| AVIF | JPG | |
|---|---|---|
| Introduced | 2019 (AV1 codec, from the Alliance for Open Media) | 1992 |
| Size at equal quality | ≈ 50% of JPG | Baseline |
| Features | Transparency, HDR, 10/12-bit colour, animation | 8-bit, no transparency |
| Browser support | Chrome, Firefox, Safari 16+, Edge | Universal |
| Desktop software | Patchy — recent versions only | Everything since the 1990s |
| Encoding speed | Slow | Instant |
Browser requirement
The tool relies on the browser to decode AVIF. Chrome 85+, Edge 85+, Firefox 93+, Safari 16.4+ (macOS Ventura, iOS 16.4) and Opera all qualify. Older Safari and any browser on iOS 15 or earlier will report that the file cannot be decoded — update the browser or use another device. Decoding runs on the device's hardware where available and takes well under a second per image.
Quality and what is lost
- AVIF and JPG are both lossy; converting adds a second generation of loss. Use quality 85–92 to keep it invisible.
- Transparency becomes white — use AVIF to PNG to keep it.
- HDR and 10-bit colour are tone-mapped to 8-bit sRGB; very bright highlights may flatten.
- Animated AVIFs are flattened to their first frame.
- EXIF and colour profiles are not copied.
Common uses
- Opening an image saved from a website in a program that does not support AVIF.
- Uploading to a form, a CMS or a marketplace that accepts JPG only.
- Sending a picture to someone on an older phone or PC.
- Inserting a downloaded image into Word, PowerPoint or an email.
- Converting an exported AVIF back to JPG for a printer.