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High Efficiency Image Container
MIME type: image/heic
HEIC is Apple's default image format since iOS 11 and macOS High Sierra. It uses HEVC (H.265) compression to produce images that are roughly half the size of equivalent JPEG files while maintaining the same visual quality.
HEIC is a container format based on ISO Base Media File Format (ISOBMFF/MPEG-4 Part 12). It uses HEVC (H.265) intra-frame coding for compression. A single HEIC file can contain multiple images, thumbnails, and metadata. Apple's implementation includes depth maps from dual cameras and Live Photo motion data. The format supports both lossy and lossless compression modes.
Windows 10/11 can open HEIC files after installing the HEIF Image Extensions from the Microsoft Store. Alternatively, convert HEIC to JPG using BriskTool's free converter - no upload needed.
Apple uses HEIC by default because it produces files roughly half the size of JPEG at the same quality, saving significant storage space. You can change this in Settings → Camera → Formats → Most Compatible.