What is AVIF? Opening .avif files and converting to JPG or PNG
An image you saved from the web is a .avif that will not open or send. Here is what AVIF is, why it is high quality yet small, and how to convert it to JPG or PNG so it is easy to work with.
AVIF is a newer, high-quality, small format
AVIF (AV1 Image File Format) is a relatively new image format. It applies the AV1 video codec's technology to still images, so at the same quality it saves even smaller than JPG or WebP. Speed-focused sites increasingly serve images as AVIF.
It also supports transparency and HDR, covering photos, illustrations, and logos alike. If an image you right-click-saved from a web page came down as .avif, that is because the site was serving AVIF.
Why it won't open or send
Current major browsers display AVIF, but an older operating-system viewer, an unmaintained editor, or an upload form restricted to JPEG and PNG may still reject it. Browser support and the support in a desktop app or submission service are separate questions.
If the image displays in a browser but not after you save it, the file is not necessarily damaged. For sharing, submission, or editing in another app, converting to widely supported JPG or PNG is the practical fix.
Renaming the extension is not conversion
Changing image.avif to image.jpg only changes the filename. The bytes remain AVIF, so software still tries to decode AVIF data and the file may continue to fail. A converter must decode the source and write a real JPG, PNG, or WebP file.
Choose the output by use: JPG for photos you need to share or submit, PNG for transparency or continued editing, and WebP for a web asset that balances size with workflow compatibility. Keep the original AVIF in case you need a different output later.
AVIF to JPG: for sharing and compatibility
For email, chat, web uploads, or document submission, JPG is the best target. It opens almost everywhere, so it clears 'the recipient can't open it' in one move, and photos stay comfortably small.
Our AVIF to JPG tool converts on drop and supports batch conversion, so you can turn a pile of AVIFs into an easy-to-handle format at once.
AVIF to PNG: for transparency and editing
For an AVIF with a transparent background, an image you will keep editing, or crisp graphics with text, PNG is the better target. PNG keeps transparency and is lossless, so it carries over AVIF's transparency and quality well.
AVIF to PNG also processes in-browser, so even a transparent AVIF converts without leaving your device, keeping the see-through areas intact.
If you are exporting for the web yourself
If you want to serve highly compressed images on your own site, AVIF and WebP are both candidates. AVIF emphasizes compression efficiency, while WebP can fit more established editing and publishing workflows. Check your target browsers and inspect the actual output before choosing.
For a received AVIF that needs to enter a web workflow, Filewisp also converts AVIF to WebP. Think JPG for photo sharing, PNG when alpha matters, and WebP when the destination is a web asset.
Bottom line: receive in JPG/PNG, serve in AVIF/WebP
AVIF is a high-compression format supported by major browsers, but that does not guarantee support in every older app or upload form. Convert to JPG for sharing, PNG for transparency and editing, or WebP when the next stop is a web workflow.
AVIF to JPG, AVIF to PNG, and AVIF to WebP are free, signup-free, and in-browser on Filewisp.