HEIC vs HEIF vs HIF vs AVIF
One is a standard, one is Apple's extension for it, one is Canon's, and one is the royalty-free successor that actually got browser support.
The short answer
HEIF is the standard. HEIC is a file extension for HEIF files that use HEVC compression.
Apple chose that extension; everyone else mostly writes .heif. They are the same thing in
practice and open with the same decoder.
| Name | What it is | Written by |
|---|---|---|
| HEIF | The container standard, ISO/IEC 23008-12 | The specification itself |
| HEIC | Extension for HEIF + HEVC | Apple — iPhone, iPad, macOS |
| .heif | Same container, generic extension | Samsung, Sony, Android, most tools |
| .hif | Same container, Canon's extension | Canon EOS R series |
| AVIF | Same container design, AV1 codec instead | Browsers, modern encoders |
Container versus codec
The distinction that clears this up is the same one as video files. An .mp4 is a
container; the video inside might be H.264, HEVC or AV1. The extension tells you how the file is
organised, not how the pictures are compressed.
HEIF works the same way. The container describes where the primary image, thumbnails, metadata and auxiliary data sit. The codec compresses the pixels. HEIF was designed to accommodate several codecs, and HEVC is simply the one that caught on, with AVIF being the same container idea paired with AV1.
Why AVIF matters here
AVIF exists because of HEVC's licensing. The Alliance for Open Media — Google, Mozilla, Netflix, Amazon, Apple and others — built AV1 as a royalty-free codec specifically to escape patent pools, then wrapped still images from it in a HEIF-derived container.
The result is telling. HEIC has been around since 2017 and no browser decodes it. AVIF arrived later and is supported in Chrome, Firefox, Edge and Safari. Same container family, same compression class, utterly different adoption, because one is free to implement and the other is not.
What this means for you
- Any tool that opens HEIC opens HEIF and HIF. If one works and another does not, the problem is the file association, not the format.
- Renaming
.heifto.heicoften makes stubborn software cooperate, since some programs check the extension rather than the file contents. - AVIF is not interchangeable with HEIC despite the shared ancestry — different codec, different decoder.
- If you are choosing a format for new work, choose AVIF. It has the compression benefits and the support HEIC never achieved.
Common questions
- Is HEIC the same as HEIF?
- Effectively yes. HEIF is the container standard and HEIC is the file extension Apple uses for HEIF files containing HEVC-compressed images. The same decoder handles both.
- Why do some files use .heif and others .heic?
- Apple chose .heic for its devices; most other manufacturers and tools write the generic .heif. Canon uses .hif. All three are the same container format.
- Is AVIF the same as HEIF?
- AVIF uses a container derived from the same design but compresses images with AV1 rather than HEVC. They are relatives, not the same format, and they need different decoders.
- Can I just rename a .heif file to .heic?
- Often, yes. Programs that identify files by extension will then accept it, because the underlying structure is identical. Programs that inspect the file contents were never confused in the first place.