Images that will not open after saving
An .avif picture saved from a web page may show up as an unknown file in an older photo viewer or editor.
AVIF to JPG Converter
This AVIF to JPG converter turns .avif images into JPG files that photo apps, editors and upload forms can open. AVIF is a newer format that packs images very tightly, and many programs still cannot read it. Output format is already JPG; add your files and they are converted right on your device, with nothing sent anywhere.
WHY USE IT
Features
Decoded by your browser
The AVIF is read by the browser's own image decoder and redrawn as a JPG, so you do not need a plug-in or an AVIF-capable editor.
Pick how big the JPG gets
Compact (quality 58) brings the JPG close to the AVIF's size, the default Fast sits at 90, and Quality at 95 suits print. The slider fine-tunes from 10 to 100.
See the size before you download
Each conversion is a separate version with its size and the change in percent, so Fast and Compact can be compared on the same image.
Batch with a free account
One file needs no sign-in. Signed in, you can convert up to 20 AVIF images at once and save them as a ZIP.
AVIF vs JPG at a glance
| Format | AVIF | JPG |
|---|---|---|
| Transparency | Yes | No |
| Compression | Lossy or lossless | Lossy |
| Animation | Yes | No |
| Best for | The smallest web images | Photos |
| Opens in | Modern browsers; many editing apps can’t open it | Opens everywhere |
WHAT IT'S FOR
Use cases
Forms and portals that ask for JPG
Many upload fields list JPG and PNG only; converting first saves a rejected upload.
Editing in software without AVIF support
Open the JPG in any editor, then export in whatever format you need.
HOW IT WORKS
How to convert an image
01
Add your AVIF files
Pick .avif files or drag them onto the box. With one file the JPG appears straight away; with more, press “Convert all”.
02
Choose a Mode
Use Compact for a small file, Fast for everyday use, or Quality when you plan to print.
03
Download
Save the JPGs separately, or grab one ZIP with every file.
Why does AVIF to JPG make the file so much bigger?
AVIF packs a picture into far fewer bytes than JPG does, so the same image grows when it is saved as a JPG. In our test a 1536 × 1024 AVIF of 190 KB became a 407 KB JPG on Fast (115% larger) but only 183 KB on Compact (4% smaller).
So when size matters, Compact gives you a JPG about as small as the AVIF, with slightly softer fine detail.
Can I keep transparency when converting AVIF?
Not in a JPG. AVIF can store transparent areas, but JPG cannot, so they are filled with white. To keep a transparent background, convert AVIF to PNG instead.
If a file will not load
The page relies on your browser to decode AVIF. If an image fails to open, update the browser or try another one, then add the file again.
FAQ
Frequently asked questions
Open this page, add the .avif files, and the converter — already set to JPG — returns a JPG for each one to download.
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