OpenAnyFile
Works
Viewing, inspecting and verifying. You get the full image on a zoomable canvas, with pixel dimensions read from the file header. File details, exact byte size and the detected signature are always shown.
How to open a .avif file
You have a AVIF file and nothing on your machine will touch it. Here is what the format actually is, and how to read one in about four seconds without installing anything.
What is a .avif file?
AV1 Image File Format is an image format developed by Alliance for Open Media, first appearing in 2019. It is normally produced by Modern export tools, Squoosh.
Stores AV1 video keyframes as stills, giving far smaller files than JPEG at the same quality, with HDR and 12-bit depth support.
| Full name | AV1 Image File Format |
|---|---|
| File category | Images |
| MIME type | image/avif |
| Magic bytes (file signature) | .. 66 74 79 70 61 76 69 66 |
| Developer | Alliance for Open Media |
| Introduced | 2019 |
| Usually created by | Modern export tools, Squoosh |
| OpenAnyFile engine | native image decoder |
| Opens without upload | Yes — parsed locally in your browser |
Open a .avif file in your browser
OpenAnyFile routes .avif to its native image decoder, which renders the full image on a zoomable canvas, with pixel dimensions read from the file header.
- Open the OpenAnyFile opener in this browser — nothing to download or sign up for.
- Drag your .avif file onto the drop zone, click to browse for it, or paste it with Ctrl+V.
- The extension is detected and the file is handed to the native image decoder.
- Your AVIF opens on its own viewer page: the full image on a zoomable canvas, with pixel dimensions read from the file header.
- Use fullscreen for a closer look, or download the file back out unchanged. Nothing is transmitted anywhere — the parsing happens in your own browser process.
What you can and cannot do with it here
Does not work
Editing and re-saving. OpenAnyFile is a reader, not an editor — for changes you still need special software or an equivalent.
Your {ext} file stays on your device
The entire pipeline — detection, decoding, rendering — runs client-side. Your browser hands the bytes to a decoder compiled to WebAssembly, the result is drawn to the page, and that is the whole journey. No account is created, no file is stored, and no analytics event carries your filename. This is also why there is no size limit imposed by a server: the only ceiling is your own available memory.
Frequently asked questions about AVIF files
Can I open a .avif file without installing special software?
Yes. OpenAnyFile's native image decoder runs in your browser, so you can read a AVIF file with nothing installed. You get the full image on a zoomable canvas, with pixel dimensions read from the file header. For full editing you still need the original application — this is a viewer, not an editor.
How can I check a file really is a AVIF file?
Look at the first bytes rather than the extension. A genuine AVIF begins with .. 66 74 79 70 61 76 69 66. Opening the file in OpenAnyFile shows that signature in the file-details panel, so a file renamed to .avif by mistake is easy to spot.
Is it safe to open a AVIF file online?
With OpenAnyFile, yes, because nothing is uploaded. The file is read locally through your browser's File API and never leaves your device, so there is no server copy to leak, log or retain. That matters most for the kind of file people are least willing to hand to a random converter site.
What is a .avif file, exactly?
AV1 Image File Format — an image/avif format created by Alliance for Open Media since 2019. Stores AV1 video keyframes as stills, giving far smaller files than JPEG at the same quality, with HDR and 12-bit depth support.
Does the same viewer handle formats related to AVIF?
Yes — the same engine also opens .gif, .jpeg, .jpg, so you can compare related files without switching tools.
Related formats
These open with the same engine, so if you have one of these sitting next to your .avif file, it will open too: