Open AVIF File Online — Instant AVIF Viewer
Received a file ending in .avif that won't open? Preview it right here, then convert it to a format every app understands.
🔒 Preview stays on your device
.avif only · preview stays on your device
Your AVIF preview will appear here.
Need this image as a JPG or PNG so any app can open it? Convert it locally — no upload, no quality guesswork.
Convert to JPG →What is an AVIF file?
AVIF (AV1 Image File Format) is a next-generation image format built on the AV1 video codec. It compresses photos and graphics dramatically better than JPG or PNG — often 50% smaller at the same visual quality — which is why major platforms, browsers, and operating systems have been adopting it rapidly. When a website wants to load fast on a slow connection, serving AVIF is one of the most effective levers available.
The catch is compatibility on the receiving end. Chrome, Edge, Firefox, and recent Safari versions open AVIF natively, but a lot of everyday software does not: older versions of Windows Photo Viewer and macOS Preview, many Android gallery and iOS Photos flows before recent updates, most desktop image editors released before 2021, common e-mail clients, and plenty of CMS upload pipelines still reject or silently fail on .avif files. If someone sent you an image you cannot open, chances are good it is AVIF.
How to open an AVIF file without installing anything
The viewer above uses your browser's built-in AVIF decoder to render the file locally — the same engine that displays AVIF images on modern websites. Click Open an AVIF file, pick the file, and it appears instantly with its pixel dimensions and file size. The preview never leaves your device, so it is safe for private or work-in-progress images.
- Check the content quickly — confirm what the file actually shows before deciding what to do with it.
- Verify the file is valid — if the preview fails to render, the file is likely corrupted or truncated rather than merely unsupported.
- Convert when ready — head to the AVIF to JPG converter or the AVIF to PNG converter to get a file every application can open.
Opening AVIF files on Windows and Mac
On Windows 10 or earlier, the built-in Photo Viewer does not support AVIF; updating to the latest Windows 11 or installing the AV1 Video Extension from the Microsoft Store adds native support. On macOS, AVIF opens in Preview from macOS Ventura (13) onward — older versions need a third-party viewer. The quickest route that works everywhere, though, is right here: open the file in this page's viewer, then convert it to JPG or PNG and never think about the format again. The converted file will open on any device, in any app, exactly as expected.
Frequently Asked Questions
▸What is an AVIF file?
AVIF is a modern image format based on the AV1 codec. It produces much smaller files than JPG at similar quality, and is increasingly used by websites for fast loading. Files end with the .avif extension. Modern browsers can display them, but many older apps and operating systems cannot.
▸Why won't my AVIF file open?
Most likely the app you are using predates AVIF support — older Windows Photo Viewer, pre-Ventura macOS Preview, or an outdated image editor. Try the viewer on this page: if it renders, the file is fine and you just need a conversion; if it fails, the file itself may be corrupted.
▸How can I open AVIF files on Windows or Mac?
Update to the latest OS and browser (Windows 11 with the AV1 extension, macOS Ventura or newer) for native support — or simply open the file in this page’s viewer and convert it to JPG or PNG, which every Windows and Mac application can read.