What is HEIC? Complete Guide to Apple's Image Format
Everything you need to know about the HEIC image format — what it is, why your iPhone uses it, and how to work with HEIC files on any device.
What is HEIC Format?
HEIC stands for High Efficiency Image Container. It is the default image format used by Apple on iPhones and iPads since iOS 11 (2017). HEIC uses the HEVC (H.265) video codec to compress still images, achieving roughly 50% smaller file sizes compared to JPG at the same visual quality.
When you take a photo on a modern iPhone, it's saved as a .heic file by default. This saves significant storage space — a crucial benefit as smartphone camera resolutions continue to increase.
Why Does Apple Use HEIC?
Apple adopted HEIC because it offers major advantages over the older JPG format:
- 50% smaller file sizes at the same quality as JPG
- Supports 16-bit color depth (vs 8-bit in JPG) for richer colors
- Can store multiple images in one file (Live Photos, burst shots)
- Supports transparency (alpha channel), unlike JPG
- Non-destructive editing — edits are stored separately from the image data
HEIC Compatibility
Despite its advantages, HEIC is not universally supported:
| Platform | HEIC Support |
|---|---|
| Apple (macOS, iOS) | Apple (macOS, iOS): Full native support |
| Windows | Windows: Requires HEIF Image Extensions from Microsoft Store (free with limitations) |
| Android | Android: Supported on Android 9+ (varies by device) |
| Web Browsers | Web Browsers: Not natively supported by most browsers |
| Social Media | Social Media: Most platforms auto-convert, but direct upload may fail |
How to Convert HEIC Files
The easiest way to make HEIC files work everywhere is to convert them. Use our free online tools:
HEIC vs HEIF: What's the Difference?
HEIF (High Efficiency Image File Format) is the container format defined by the MPEG group. HEIC is a specific implementation that uses HEVC compression inside a HEIF container. In everyday use, the terms are interchangeable — .heic and .heif files can both be converted with the same tools.