GIF
The Graphics Interchange Format is a bitmap image format that was developed by a team at the online services provider CompuServe led by American computer scientist Steve Wilhite and released on June 15, 1987.
GIF to HEIF Converter
Convert GIF files to HEIF with predictable output quality and fast processing.
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GIF and HEIF format details
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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.