AVIF (AV1 Image File Format) is the newest, most efficient image format on the web — it routinely beats JPEG and WebP on file size at the same quality. The catch is age: plenty of older apps, image editors, and devices still can't open an .avif file. avif.tools bridges that gap by converting AVIF to JPG, the format that opens absolutely everywhere. Upload one image or a batch and get clean, universally compatible JPGs back in seconds.
It's free, runs online with nothing to install, and never adds a watermark. Transparency is flattened onto white for JPG output; if you need to keep an alpha channel, use AVIF to PNG instead.
Why won't my AVIF file open?
AVIF is built on the AV1 video codec and only reached broad browser support recently. Many desktop apps, older phones, and image editors — and a surprising number of upload forms — still don't recognise it. Converting to JPG sidesteps all of that: JPEG has been the universal image format for three decades and opens on literally everything. If you downloaded an AVIF from a modern website and your software refuses it, a quick conversion to JPG is the fix.
Does converting AVIF to JPG lose quality?
AVIF stores images more efficiently than JPEG, so the converted JPG is usually a larger file, but at our quality setting (92) the visible difference is negligible. You're trading a little disk space for universal compatibility. Keep in mind AVIF is often already compressed, so you can't gain detail by converting — you're repackaging the picture into a format everything understands. For lossless editing, convert to PNG instead.
AVIF, WebP or JPG — which should you keep?
If your destination is the modern web and you control it, AVIF or WebP give the smallest files. If you're sending an image to someone else, uploading to an older platform, or opening it in legacy software, JPG is the safe choice. Going the other way, you can shrink your own photos by converting JPG to AVIF or PNG to AVIF for big bandwidth savings.