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AVIF to JPG Converter

This free AVIF to JPG converter turns your AVIF images into JPG files right in your browser. Add one image or several, set the JPG quality, and download the results — your pictures never leave your device, because the whole conversion happens on your own computer. No uploads, no queues, and no sign-up.

How it works

AVIF is a modern image format built on the AV1 video codec. It squeezes a photo into a much smaller file than JPG can, which is why websites and newer phones have started using it — an AVIF photo can be half the size of the same picture saved as a JPG, with no visible difference. The catch is compatibility: many older programs, printers, and photo apps cannot open AVIF at all. JPG, by contrast, has worked everywhere for more than thirty years. This converter bridges the gap by decoding each AVIF and saving it again as a JPG that any app can open.

The conversion runs entirely in your browser. When you add a file, the browser decodes the AVIF image into pixels, draws those pixels onto a canvas, and exports the canvas as a JPEG at the quality you chose. The quality slider runs from 50 to 100: 85 is the default and a good balance for photos shared online, 90 to 95 keeps more detail for printing or further editing, and 70 to 80 makes the smallest files, which suits thumbnails and images sent over a slow connection. The maximum width setting resizes large pictures as they are converted — a 4000-pixel-wide photo can come out at 1920, 1280, or 800 pixels wide, keeping its original shape — while Original keeps the full size. Because JPG has no transparency, any see-through parts of an AVIF are filled with the background colour you pick, white or black.

Not every browser can decode AVIF, and this tool is honest about that instead of failing silently. It first tries the browser's built-in image decoder, and if that cannot read the file, it tries loading the image the ordinary way. If both attempts fail, it tells you plainly that your browser cannot decode AVIF and suggests trying a recent version of Chrome, Edge, or Firefox, which all support the format. A file that is not really an AVIF — for example, a JPG renamed to end in .avif — is rejected with a clear message naming the file, rather than producing a broken download.

Each converted image gets its own download link, so you can save the ones you want and skip the rest, and the Download all button saves every converted JPG in one go. The output keeps the original name with the extension changed to .jpg, so photo.avif becomes photo.jpg. Expect the JPG to be larger than the AVIF it came from — that is normal, because AVIF compresses better than JPG at the same visible quality. The picture itself, though, looks the same: same colours, same detail, same size on screen, in a format that opens in every photo app, editor, and printer.

Worked example

A photographer downloads a portfolio photo from a website as sunset.avif — 4000 × 3000 pixels, 1.2 MB — but her photo editor cannot open AVIF files, so she needs a JPG version for a web gallery that accepts images up to 1920 pixels wide.

Step 1: Add sunset.avif in the file picker.
Step 2: Keep the quality at 85, set Max width to 1920 px, and leave the background on white.
Step 3: Press Convert to JPG. The tool decodes the AVIF, resizes it, and exports a JPEG at quality 85.

The result is sunset.jpg, exactly 1920 × 1440 pixels — the original 4:3 shape kept — saved at JPG quality 85. The JPG is larger than the 1.2 MB AVIF (around 400 KB at this size and quality, depending on the photo's detail), and it opens in her editor and uploads to the gallery without a problem.

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