HEIF to VIFF Converter
Processing entirely on your device — large files may take a moment.
HEIF is the family container HEIC belongs to — same HEVC-based compression, often used by name on Android and camera firmware where HEIC is the Apple branding. 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 HEIF compares to VIFF
| HEIF | VIFF | |
|---|---|---|
| Compression | Lossy HEVC (lossless variant exists) | None (uncompressed) |
| Transparency | Supported | Supported |
| Animation | Supported (bursts/sequences) | Not supported |
| Metadata | EXIF, depth maps, HDR gain maps | Attribute lists |
| Best for | iPhone photo storage | Legacy scientific datasets |
How to convert HEIF to VIFF
- 1
Select your files
Drag & drop your HEIF 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 HEIF format
HEIC (High Efficiency Image Container) is the HEIF container carrying HEVC-compressed image data, and it has been the default photo format on iPhones since iOS 11. At equivalent quality it stores photos in roughly half the space of JPG, keeps 10-bit color and HDR information intact, and can hold multiple images — bursts,Live Photos pairs, even depth maps — in one file.
Its weakness is everything outside Apple's ecosystem. Windows needs an extension from the Store to preview it natively, many web services still reject the upload, and HEVC's patent licensing slowed hardware adoption on non-Apple devices. Android 9+ phones generally handle it, but the desktop web remained JPG territory for years.
+Strengths
- ✓About half the size of JPG at the same quality
- ✓10-bit color and HDR survive the pipeline
- ✓One file can hold bursts, sequences and depth data
!Limitations
- −Windows and many web services need extras to open it
- −HEVC patent licensing complicated adoption outside Apple
- −Thumbnail and preview performance on old hardware is poor
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 HEIF to VIFF?
There is a concrete reason this conversion exists: Windows and many web services need extras to open it VIFF sidesteps that — Holds multi-band scientific raster data If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this HEIF 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 HEIF to VIFF?
No — VIFF is a lossless format, so every pixel of the converted image matches your original HEIF 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 HEIF 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.