Vectors and Bitmaps

A bitmap and a vector are two types of basic image files.

Bitmaps are quite large file sizes because they have to record what is happening in each pixel.
A bitmap is good for photographers as they reproduce colour accurately. When you re-size a bitmap you can lose the quality because each one of the pixels becomes available

A vector is graphics file made up of numbers and co-ordinates, because of this the file size tends to be smaller as only numbers and co-ordinates are stored. Unlike a bitmap, when you resize the image, no quality is lost and without increasing the file size. Vectors are ideal for cartoons, signs and diagrams