Turn AVIF images saved from the web into ordinary JPGs that every app accepts, converted on your own device. Nothing is uploaded, and there’s no account, watermark or limit.
Add your AVIF files: drag them onto the page or click to pick them from your downloads. Several at once is fine.
Set the JPG quality (90% by default) and choose how to handle metadata; “Remove location” is the default.
Start the conversion. Your browser decodes each AVIF with its own built-in decoder and encodes the JPG locally. Nothing is uploaded.
Download the JPGs individually, or click “Download all (.zip)” to save them together.
AVIF stands for AV1 Image File Format. It was published in 2019 by the Alliance for Open Media, the industry group behind the royalty-free AV1 video codec. An AVIF image is essentially a single AV1-compressed frame stored in a HEIF-style container.
Its main selling point is efficiency: at the same visual quality, an AVIF is usually much smaller than a JPG, and it supports transparency, high dynamic range and wide color. That is why many websites, online shops and image services now deliver pictures as AVIF to browsers that can display them.
This is also how most people end up with AVIF files without choosing them. You save an image from a web page and get a .avif file, sometimes even when the address seemed to end in .jpg, because the site picked the format your browser said it supports.
Browsers handle AVIF well, but the rest of your software may not. Older image viewers and editors, some messaging apps, office documents and upload forms still expect JPG or PNG.
Windows
Windows support for AVIF depends on your Windows version and installed extensions, and the built-in apps convert one image at a time.
Mac
Older macOS versions can't open AVIF in Preview. A current browser can still decode it, so this page works there too.
Android
AVIF is the more modern format and usually produces smaller files for the same look. JPG wins on compatibility: it has worked in practically every program, device and website for decades. Converting AVIF to JPG trades file size for that universal support.
So expect the JPG to be larger than the AVIF you started with. The extra bytes don't add detail; they are simply how JPG stores the same picture less efficiently. If size matters, a quality around 80% is a good compromise for web or chat use. Keep 90% or more if you might edit the image later.
Both formats are lossy, and the AVIF has already been compressed once. Converting adds a second, small round of JPG compression. At the default 90% this is hard to see, but there's no way to recover detail the AVIF compression removed.
Transparency is the other thing to watch. JPG can't store it, so transparent areas of an AVIF, such as the background around a product photo or logo, become white. If you need to keep transparency, convert to PNG instead.
Some AVIF images use HDR or a wide color gamut. The JPG is saved in standard sRGB, so very bright highlights and intense colors may look slightly flatter than in the original.
Many websites and image services send AVIF to browsers that support it because the files are smaller and load faster. When you save the image, you get the file the site delivered, so it arrives as .avif even if you expected a JPG.
AVIF is still fairly new. Older versions of Windows and macOS, and many image viewers and editors, don't support it. On Windows the free AV1 Video Extension adds support to the Photos app; on Mac, Preview opens AVIF from macOS Ventura onward. Converting to JPG avoids the problem everywhere.
Slightly. The image is compressed again as a JPG, but at the default 90% quality the difference is very hard to notice. Conversion can't restore detail that the original AVIF compression discarded.
AVIF compresses images far more efficiently than JPG, so the same picture takes more space as a JPG. That's expected and doesn't mean the quality improved. Lower the quality slider if you need smaller files.
JPG has no transparency, so transparent areas are filled with white. If you need to keep a transparent background, convert the AVIF to PNG instead.
filetidy uses your browser's own AVIF decoder, so you need a browser that supports AVIF: current versions of Chrome, Edge and Firefox, or Safari 16.4 and later. Older browsers can't decode AVIF and the conversion will fail.
No. Decoding and encoding happen in your browser, on your device. There's no upload, no account and no watermark, and the site sets no limit on how many files you convert.
Last updated October 28, 2026
Higher quality means larger files. 90% is a good default.