Convert AVIF to JPG
AVIF is the most efficient image format in mainstream use — noticeably smaller than WebP, dramatically smaller than JPG — which is why more and more websites now serve it. It is also the format most likely to be rejected by whatever software you try to open it in, because desktop application support lags browser support by years.
Files are decoded and re-encoded inside this browser tab. Nothing is uploaded — you can disconnect from the internet after this page loads and conversion still works.
This converter reads AVIF using your browser's own decoder and writes a standard JPG. Nothing is uploaded.
How to convert AVIF to JPG
- Drag your AVIF files onto the box above, or click it to browse.
- Each file converts in place — no upload, no queue.
- Download them one by one, or grab the whole batch as a ZIP.
What AVIF actually is
AVIF is a still image wrapped in the AV1 video codec, developed by the Alliance for Open Media as a royalty-free alternative to HEIC. That royalty-free status is the key difference: it is why browsers adopted AVIF while refusing HEIC. Chrome shipped support in 2020, Firefox in 2021, and Safari in version 16.
For the same visual quality, AVIF files are commonly half the size of JPG. It handles wide colour gamut, high dynamic range and transparency, none of which JPG can represent.
Why the conversion loses capability, not just size
Going from AVIF to JPG gives up more than compression efficiency. JPG is limited to 8 bits per channel and standard dynamic range, so an HDR AVIF is tone-mapped down by the browser during decoding. It has no alpha channel, so transparency is flattened onto white. And its colour handling is narrower than AVIF's.
For an ordinary photograph destined for an upload form, none of this is noticeable. For an HDR image you intend to keep, converting to JPG is a genuine downgrade and worth avoiding if the destination supports anything better.
Browser support is required
Unlike the HEIC conversions on this site, which bundle their own decoder, AVIF decoding relies on your browser. Any current version of Chrome, Edge, Firefox or Safari will work. A browser too old to decode AVIF will report that it cannot read the file, in which case updating it resolves the problem.
Frequently asked questions
Why can I not open AVIF files on my computer?
Browser support arrived years before desktop application support. Most photo editors, Office applications and upload forms still do not recognise AVIF, even though every current browser displays it fine.
How much bigger will the JPG be?
Typically around twice the size, sometimes more. AVIF compression is substantially more efficient than JPEG, and that efficiency is what you are trading away for compatibility.
Does converting lose quality?
Some, since the image is re-encoded from one lossy format into another. At the quality setting used here the difference is not visible under normal viewing conditions.
What happens to transparency and HDR?
Transparency is flattened onto a white background because JPG has no alpha channel. HDR content is tone-mapped to standard dynamic range during decoding. Both are one-way losses.
Is the file uploaded anywhere?
No. Your browser decodes it and re-encodes it locally. No network request carries your image.