High Efficiency Image File Format
High Efficiency Image File Format
High Efficiency Image File Format (HEIF) is a digital container format for storing individual digital images and image sequences. The standard covers multimedia files that can also include other media streams, such as timed text, audio and video.
History
The requirements and main use cases of HEIF were defined in 2013. The technical development of the specification took about one and a half years and was finalized in the middle of 2015.
History
On some systems, pictures stored in the HEIC format are converted automatically to the older JPEG format when they are sent outside of the system, although incompatibility has led to problems such as US Advanced Placement test takers failing due to their phones uploading unsupported HEIC images by default, leading the College Board to request students change the settings to send only JPEG files.
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