Technical MIME Specification & Web Server Guide

image/heif

Technical overview, official IANA specification, header magic bytes, and server configuration snippets for .HEIF files (High Efficiency Image File Format).

File Extension

.heif

Content-Type Header

image/heif

Format Category

Images

Standard Specification

ISO/IEC 23008-12

Description & Usage

ISO standardized container for high efficiency single images and image sequences.

HTTP Server Content-Type Configuration Code

# Nginx mime.types configuration for .heif
types {
    image/heif    heif;
}

OS Compatibility Matrix

Windows

macOS

Linux

Android

iOS

Want to test header signatures or binary files?

Run binary magic byte inspection in Magic Byte Detector.

Frequently Asked Questions

The official MIME content type for .heif files is "image/heif". Web servers use this header to instruct browsers how to render or process .heif data.