HEIC（高效图像容器）
HEIC 是一种基于 HEVC（H.265）视频编解码器的现代图像格式，被用作 Apple 设备的默认照片格式。它比 JPEG 的压缩效率大约高 50%，同时支持深度图和实况照片等功能。HEIC 文件以更小的体积保持更高的质量，但在 Apple 生态系统之外的支持有限。
MIME 类型
image/heic
类型
二进制
压缩
有损
优点
- + 50% smaller than JPEG at equivalent quality
- + 10-bit color depth (over 1 billion colors)
- + Supports depth maps, live photos, and bursts
- + Default format on iPhone and iPad
缺点
- − Limited support outside Apple ecosystem
- − HEVC patents create licensing concerns
- − No direct browser support for web display
何时使用 .HEIC
HEIC 在 Apple 设备上自动使用。如需在网页上展示或跨平台分享，请转换为 JPEG 或 WebP。
技术细节
HEIC 使用 HEVC 帧内压缩，支持 10 位色彩、Alpha 透明度和图像序列。它将图像存储在 ISO 基础媒体文件格式（ISOBMFF）容器中。
历史
HEIC 于 2015 年作为 MPEG-H Part 12（ISO/IEC 23008-12）的一部分标准化。Apple 在 iOS 11（2017 年）中将其作为 iPhone 相机的默认格式。
从 .HEIC 转换
转换为 .HEIC
相关格式
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