Where AVIF files come from
You probably did not create your AVIF file on purpose. Most people end up with one after right-clicking an image on a website and choosing Save Image As. Large sites and image CDNs serve AVIF to browsers that support it because the files are dramatically smaller than JPG. Some Android phones and newer cameras can also shoot in AVIF.
The problem shows up later: the file will not open in your photo editor, attach to a form, or preview in an older operating system. JPG is the safe destination because essentially every piece of software from the last 25 years reads it.
Picking a JPG quality setting
This converter lets you choose a quality between 60 and 100. Since the AVIF was already compressed once, you are not going to recover detail by going higher than needed, but you can lose more by going too low.
| Quality | What to expect |
|---|---|
| 95–100 | Closest to the AVIF, large files. Use when you plan to edit the image further. |
| 85–90 | Default range. Visually clean for photos at a reasonable size. |
| 70–80 | Smaller files for email or web forms with size caps. Fine on most photos. |
| 60–65 | Visible softening and blockiness on gradients like skies. Use only to hit a strict limit. |
A practical tip: AVIF files saved from websites are often heavily compressed already. Exporting them at 100 just inflates the JPG without adding anything you can see. Quality 85 to 90 is usually the sweet spot.
Handling transparent AVIF images
AVIF supports an alpha channel, so logos, stickers and product cutouts saved from websites may contain transparent areas. JPG cannot store transparency at all. Instead of leaving those pixels to turn black or grey, the tool lets you choose a background color to flatten onto.
- Pick white for documents, print and most marketplace listings.
- Match the hex color of your slide or web page if the image will be placed on a colored background.
- If you need to keep the transparency, JPG is the wrong target; a PNG output would be a better fit.
Troubleshooting
The file will not load. Some files named .avif are actually WebP or JPG with a renamed extension, while others use AVIF features your browser cannot decode, such as image sequences. Updating the browser fixes most decode errors.
Colors look duller. Some AVIF images are HDR or use a wide color gamut. JPG is standard dynamic range, so very bright highlights get mapped down. This is expected and cannot be fully preserved in JPG.
The JPG is much larger than expected. That is normal for this direction. Drop the quality slider to 80 and compare.
Batch and privacy
You can convert up to 50 AVIF files of up to 50 MB each in one go. Everything runs inside your browser, so the images are never sent to a server, and output names keep the original base name with a suffix added.