Why can nothing open my AVIF file?

Because it is new. AVIF is supported by every current browser but by very little else — most desktop image viewers, most older editing software, most upload validators and most printers have not caught up. The file is not damaged; the software simply does not know the format.

Does FileBelow convert AVIF the other way, to AVIF?

No, deliberately. Browsers can display AVIF but cannot reliably create it, and everything here runs on your own device — so an AVIF export would work on some machines and fail on others with no way for us to tell you in advance. A converter that produces a file half the time is worse than one that does not offer the option.

Will the JPG be much bigger?

Yes, usually substantially. AVIF is the most efficient of the common formats and typically produces files around half the size of an equivalent JPEG. Converting buys compatibility and costs bytes, which is the whole trade.

Does the conversion lose quality?

A little. Both are lossy, so this is a second round of compression on an image that has already been through one. FileBelow encodes at a high quality setting so the difference is not visible at ordinary viewing sizes, but it is real and no tool avoids it. Converting to PNG instead avoids the second round at the cost of a much larger file.

Convert AVIF to JPG

Another image saved from the web that nothing will open. Same problem as WebP, newer format.

Choose an imageor drag it here, or paste it

JPG, PNG, WebP, HEIC, AVIF and BMP. Your file is processed on your device.

How do I convert an AVIF file to JPG?

Add the AVIF below and download the JPG. AVIF is the newest of the web image formats and is served by a growing number of sites, so files saved from a browser increasingly arrive in it — and almost no desktop software or upload form accepts one yet. Converting produces a JPG those programs understand.

The newest version of an old problem

AVIF is to WebP roughly what WebP was to JPEG: meaningfully smaller at the same visual quality, adopted by browsers first and by everything else considerably later. Sites that care about page weight have started serving it, which means images saved from those sites arrive as .avif files.

And then nothing opens them. Windows Photo Viewer, older Photoshop, most upload forms, most print shops, a good deal of business software. The image is intact; the container is ahead of the software.

How this page decodes it

By asking your browser to. Every current browser can display AVIF, and FileBelow uses that same built-in support to decode the file before re-encoding it as a JPG. Nothing is uploaded and no additional decoder is downloaded.

The one consequence worth knowing: if you are using a genuinely old browser that cannot display AVIF, this page cannot convert it either, and it will say so rather than failing silently. Opening the same page in an up-to-date browser is the fix.

Why we will not convert to AVIF

Reading AVIF is universal; writing it is not. Browsers can decode AVIF and cannot reliably encode it — support for producing one from a canvas is patchy, inconsistent between browsers, and absent on some platforms entirely.

Because FileBelow does all of its work on your device rather than on a server, it can only offer what your device can actually do. An AVIF export would silently succeed for some people and silently fail for others, and there is no honest way to present a feature like that. If AVIF export ever becomes dependable in browsers, it will appear here; until then the absence is the accurate answer.

JPG or PNG?

JPG for a photograph: far smaller, and the second round of lossy compression is invisible on continuous-tone content at a high quality setting.

PNG if the image has transparency — AVIF can store it and JPEG cannot, so those areas would otherwise become solid colour — or if it is a screenshot, a diagram or anything with text, where a second JPEG pass leaves visible halos along the edges. Choose PNG in the format control above and both cases are handled.

If there is also a size limit

Expect the JPG to be roughly twice the size of the AVIF, which is often enough to break a limit the original comfortably met. Set the maximum under Advanced options and FileBelow will convert and compress in one pass rather than two, searching resolution and quality together to find the best-looking file that fits.

If the AVIF has transparency, PNG is the destination rather than JPG — the same reasoning applies as for any lossy-to-lossy conversion. And if the resulting JPG is now too large for wherever it is going, the compressor takes a byte target directly.

Common questions

Why can nothing open my AVIF file?: Because it is new. AVIF is supported by every current browser but by very little else — most desktop image viewers, most older editing software, most upload validators and most printers have not caught up. The file is not damaged; the software simply does not know the format.
Does FileBelow convert AVIF the other way, to AVIF?: No, deliberately. Browsers can display AVIF but cannot reliably create it, and everything here runs on your own device — so an AVIF export would work on some machines and fail on others with no way for us to tell you in advance. A converter that produces a file half the time is worse than one that does not offer the option.
Will the JPG be much bigger?: Yes, usually substantially. AVIF is the most efficient of the common formats and typically produces files around half the size of an equivalent JPEG. Converting buys compatibility and costs bytes, which is the whole trade.
Does the conversion lose quality?: A little. Both are lossy, so this is a second round of compression on an image that has already been through one. FileBelow encodes at a high quality setting so the difference is not visible at ordinary viewing sizes, but it is real and no tool avoids it. Converting to PNG instead avoids the second round at the cost of a much larger file.