HEIF file format

High Efficiency Image Format, the general still-image profile of the HEIF container.

MIME type: image/heif
Extensions: .heif
Category: Images

Magic-number signature

0x00000004	66747970	ftyp	ISO-BMFF 'ftyp' box
0x00000008	6D696631	mif1	brand 'mif1'

About the HEIF format

HEIF is the general-purpose still-image profile of the same container HEIC uses, able to hold image sequences and auxiliary data. Its 'ftyp' brand is 'mif1'.

Related formats

HEIC
AVIF
MP4

Have a file that might be HEIF? Identify it with the File Type Identifier — it reads the magic number locally, nothing is uploaded. Or browse all formats.