FILE FORMAT GUIDE
High Efficiency Image File Format (.HEIF): Structure & Safe Inspection
A HEIF file is a container for compressed images and related data. The container is not tied to one image codec; inspect its brands and items rather than assuming HEVC.
Check supported header evidence locally. Identification is not file validation or a malware scan.
Analyze a file locallyQuick facts
- Extension
- .heif
- Format
- High Efficiency Image File Format
- Category
- image
- MIME type
- image/heif
- Standard / developer
- ISO/IEC
- Open with
- ImageMagick identify
What is HEIF?
HEIF can hold a primary image plus other image items and metadata. Apple registers public.heif and the .heif extension independently from the codec-specific public.heic type.
- Package one or more compressed images and associated metadata
How to open HEIF
ImageMagick format support can depend on its build and delegates; check the local format list before relying on this workflow.
ImageMagick identifyCommand-line tool
First run magick identify -list format and confirm HEIF read support in this installation. Then run magick identify -verbose -- input.heif to inspect the format and image characteristics without overwriting the source.
Technical details
- Signature
- Not reviewed
- Encoding
- Not applicable
- Container
- HEIF / ISO Base Media File Format
- Compression
- Not reviewed
Things to check
- The filename alone does not identify the codec used for every image item.
Related formats
- HEVC Image File
HEIC identifies HEIF content using HEVC image coding; HEIF itself is the broader image-file format.
- AV1 Image File Format
AVIF is an image-file format based on the same ISO Base Media File Format family and uses AV1 image coding.
- JPEG Image
JPEG is a simpler single-image compatibility target, while HEIF can package multiple image items and metadata.
Sources & review
Fact review: 2026-09-19. Unknown fields are not inferred from the file extension.