Convert JPG to AVIF
Convert JPG images to AVIF free, in your browser. No upload, no account, no watermark.
Runs in your browser. Nothing is uploaded.Change the format. Drop an image, a PDF or a Word document.
- JPG · PNG · WebP · Text · Word
- Word
- PDF · Text
Your files are processed by your own browser and never sent to a server. Open your browser's network tab and convert one, there is no upload to see.
How to convert JPG to AVIF
- Drop your JPG files onto the box above, or paste them with Ctrl+V.
- Pick a quality. Around 90% is indistinguishable from the original for most images.
- Your browser does the work on your own machine.
- Save each file from its tile, or take them all at once.
What changes, and what does not
Transparency is not gained
AVIF can store transparency, but a JPG has none to give it. Converting cannot invent a transparent background; that needs an editor and a decision about which pixels should go.
The loss compounds
Both formats throw detail away to get small, so a JPG that was already compressed once is compressed again on the way to AVIF, this time including the artefacts of the first pass. Convert from the original rather than from a copy, and do it once.
Colour
JPG: 16.7 million, with no transparency at all. AVIF: millions, with 10 and 12 bit depth and wide colour where the source has it.
JPG and AVIF side by side
| JPG | AVIF | |
|---|---|---|
| Where it came from | 1992, from the Joint Photographic Experts Group | 2019, built on the AV1 video codec |
| Throws detail away | Yes | Yes |
| Transparency | No | Yes |
| Animation | No | Yes |
| Where it opens | Everywhere, on everything, including hardware old enough to vote | Every current browser. Outside the browser, support is still thin. |
| Best at | Photographs, and anything going somewhere you cannot predict | Photographs on a web page you want as small as they can honestly go |
How much smaller will the file be?
It depends on the quality you choose. At the default the result is usually a little smaller, because AVIF is the more efficient of the two, but the honest answer is that you are re-compressing something already compressed and the gain is modest. Drop the quality and the file drops with it.
Can I convert it back afterwards?
Each pass loses a little more, so a file converted back and forth repeatedly will visibly degrade. Once is fine. Doing it as a habit is not. Always start from whichever copy has been compressed fewest times.
About JPG
The universal photo format. Lossy, no transparency, opens absolutely everywhere.
About AVIF
The smallest of the four, often half a JPG. We ship the encoder, so it costs a one-off download.
Worth knowing: Needs a browser released in the last few years to decode.
Will the quality change?
AVIF is lossy, so the image is decoded and re-encoded and a little detail is dropped. At high quality this is invisible. Convert once from your original rather than repeatedly, because each pass compounds.
Other conversions
JPG also converts to PNG, WebP, PDF and Word.
AVIF also comes from HEIC, PNG, WebP, GIF and BMP.