file sizes are low as it reduces repetition of pixel patterns
origionally designed for photographs
widely used for web pages thanks to the effectiveness of compressing images
the amount of compression can be varied, and at high levels of compression a very low file size can be achivied
JPEG does not support animation or trancenparency, and the compression used is lossy which means that image details get permanently lost during compression
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GIF = Graphics Interchange Format
GIF is a compressed, bitmapped image file type
GIF files can be animated sequences of images or singular still images
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