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Convert AVIF to JPG

Files never leave your device. All processing happens in your browser.

Lower means a smaller file. Above 90 the file grows fast for little visible gain.

Pixels. Leave empty to keep the original dimensions.

JPG has no transparency, so see-through areas are filled with this colour.

How to convert AVIF to JPG

  1. 1

    Drop in the AVIF files your software refuses to open.

  2. 2

    Pick a quality level, and a fill colour if the image has transparency.

  3. 3

    Download JPGs that work in any program.

AVIF is the format that finally beat JPEG properly — often half the size at the same quality — which is exactly why you have ended up with a file nothing will open. Sites that care about speed now serve AVIF, so saving an image from one hands you a .avif file, and outside the browser almost nothing recognises it yet.

Why support is so uneven

AVIF is built on AV1, a video codec, and decoding it needs a modern implementation that older software simply does not contain. Browsers shipped it quickly because they already had AV1 for video. Everything else — Windows without the optional extension installed, older macOS, most print services, Office, the majority of desktop editors, phone gallery apps on older versions — is still catching up. Converting to JPEG is the pragmatic fix.

You will lose some of what makes AVIF good

AVIF can store more than JPEG can represent, so some of it has to be discarded in the conversion. This is worth knowing if colours look subtly different afterwards.

  • AVIF supports 10- and 12-bit colour depth; JPEG is 8-bit. Very smooth gradients — a clear sky, a studio backdrop — can pick up faint banding.
  • AVIF supports HDR and wide colour gamuts. JPEG output here is standard sRGB, so an HDR image is tone-mapped down and highly saturated colours may shift slightly.
  • AVIF supports transparency; JPEG does not, so transparent areas are filled with the colour you choose.
  • Animated AVIF converts to its first frame only.

Expect a much larger file

This is the conversion most likely to surprise people on size. AVIF is so efficient that a JPEG of equivalent visual quality is frequently two to three times larger. A 300 KB AVIF becoming a 900 KB JPG is entirely normal and is not a sign that anything went wrong. If size matters and the destination is a web page, converting to WebP instead gives you a middle ground with far broader software support than AVIF.

Choosing a quality setting

Because you are re-encoding an already-compressed image, going too low compounds the damage: JPEG artifacts land on top of AVIF artifacts and the result can look worse than either format alone would at that size. Quality 85 is a sensible floor here, higher than you might use converting from an uncompressed source.

Your browser decodes the AVIF natively — no codec download is needed for this direction — and re-encodes it as JPEG entirely on your own device. Nothing is uploaded at any point.

Questions about AVIF to JPG

Why will my computer not open AVIF files?

AVIF decoding is built on the AV1 video codec, which older software does not include. Browsers shipped support early; Windows needs an optional extension, older macOS versions cannot open it at all, and most desktop editors and print services still do not accept it.

Why is the JPG so much bigger than the AVIF?

AVIF compresses roughly twice as efficiently as JPEG, so matching its visual quality in JPEG takes two to three times the bytes. That size increase is the cost of the compatibility you are converting for.

Will the colours look exactly the same?

Usually, but not always. AVIF can hold 10-bit colour, HDR and wide colour gamuts, none of which JPEG supports. Very smooth gradients may show faint banding, and strongly saturated or HDR images can shift slightly when mapped down to standard sRGB.

What happens to a transparent background?

It is filled with the colour you pick above, white by default, because JPEG cannot store transparency. Convert to PNG instead if the transparency needs to survive.

Can I convert an animated AVIF?

You will get the first frame as a still image. JPEG has no support for animation, so no converter can preserve it in a JPG.

What quality should I choose?

At least 85. You are compressing an already-compressed image, so a low setting stacks JPEG artifacts on top of AVIF ones and the result degrades faster than it would from an original.

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