AVIF to VIFF Converter
Processing entirely on your device — large files may take a moment.
AVIF Image and Khoros Visualization Image exist for different jobs: AVIF is the newest generation of image format, based on the AV1 video codec. It compresses even better than WebP and JPG, supports HDR and 12-bit color, though encoding takes noticeably longer. Convert legacy VIFF datasets to PNG for modern viewing and notebooks.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How AVIF compares to VIFF
| AVIF | VIFF | |
|---|---|---|
| Compression | Lossy (AV1), lossless variant | None (uncompressed) |
| Transparency | Supported | Supported |
| Animation | Supported | Not supported |
| Metadata | EXIF, ICC embeddable | Attribute lists |
| Best for | High-performance web images | Legacy scientific datasets |
How to convert AVIF to VIFF
- 1
Select your files
Drag & drop your AVIF files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to VIFF". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted VIFF file individually, or grab everything at once as a ZIP archive.
About the AVIF format
AVIF wraps AV1 intra-frame coding inside a HEIF container, championed by Netflix and the Alliance for Open Media. It is currently the compression king of still images: at typical web sizes it beats JPG and WebP visibly, it inherits 10/12-bit color, HDR and wide gamut from its video heritage, and it animates. Being AV1-based, it is royalty-free.
The trade-off is encoding cost: AVIF encoding is genuinely slow in software, which matters for build pipelines and batch jobs. Support is solid in every current browser (Safari since 16.4, Chrome since 85), while many native apps and older photo tools still shrug at it.
+Strengths
- ✓Best-in-class compression at web sizes
- ✓HDR, 10/12-bit color and wide gamut supported
- ✓Royalty-free (AV1) and animation-capable
!Limitations
- −Encoding is slow, especially in software
- −Native app and photo-tool support still maturing
- −No progressive decoding
About the VIFF format
VIFF is the image format of the Khoros software system, a visual-programming environment built for scientific image processing in the late 1980s and 1990s. Its files carry raster data plus optional attribute lists, and it survives today mostly in older academic datasets and image-processing course material.
Modern software rarely opens VIFF without help. Converting VIFF to PNG puts legacy research imagery into a format every viewer, notebook and browser understands — useful when reviving old datasets or coursework.
+Strengths
- ✓Holds multi-band scientific raster data
- ✓Attribute lists travel with the image
- ✓Simple, fully documented binary layout
!Limitations
- −Tied to discontinued Khoros tooling
- −No browser or OS support
Why convert AVIF to VIFF?
Think of it as moving your file to the container that fits the job. Encoding is slow, especially in software VIFF works differently: Holds multi-band scientific raster data If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this AVIF to VIFF converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will I lose quality converting AVIF to VIFF?
No — VIFF is a lossless format, so every pixel of the converted image matches your original AVIF file. You can also adjust the quality/size balance before converting when the target format supports compression.
What happens to EXIF data and other metadata?
Conversions here re-encode the image, and re-encoding generally does not carry the original metadata over. If the EXIF data of your AVIF files matters (camera model, GPS, timestamps), keep the original file as the master and treat the converted copy as the shareable version.
Will transparent areas survive the conversion to VIFF?
Transparency is kept whenever VIFF actually supports an alpha channel. If the target format has none (like JPG), transparent areas are flattened onto a white background — that is a property of the format, not of this tool.