Vectors vs Bitmaps

Vectors are typically much smaller files as they consist of a series of vector 'points' that describe the image. This in turn requires some kind of algorithm (player/viewer) to reproduce this image on screen by rendering all the shapes according to the vector list. They are particularly suitable for more simple graphics made up of shapes and block or gradient colours.

Bitmaps are usually larger files as they consist of colour information for each pixel, which is multiplied by width and height. Although compression is often used, the file sizes can still be larger than vector files. Bitmaps are suited to complex, detailed pictures like photographs, and can be rendered on most devices.