The High Efficiency Image File Format (HEIF) is a standard developed by the Moving Picture Experts Group (MPEG) for storage of images and image sequences. The standard facilitates file encapsulation of data coded according to the High Efficiency Video Coding (HEVC) standard. The compression performance of HEVC is superior to any alternative image or image sequence coding format. HEIF includes a rich set of features building on top of the widely used ISO Base Media File Format (ISOBMFF), making HEIF feature-wise superior compared to other image file formats.
This site provides technical information, usage examples and files, source code and external links to various information sources related to HEIF.