To create the picture, a grid can be set out and the squares, known as pixels, coloured (0 - black and 1 - white): one bit per pixel (0 or 1) - two possible colours two bits per pixel (00 to 11 ...

JPEG and PNG files store 24 bits for each pixel, whereas GIF images only store 8 bits per pixel. The higher colour depth formats will produce files with a greater file size.

A method of compressing an image that enables 8 bits per pixel to look almost as good as 24 bits per pixel. The technique determines the 256 most frequently used colors in the image and creates a ...