image file types.

GIF files:

gif files are used for.....storing drawings that have lots of same-colour pixels. these files are bitmapped images

JPEG files:

jpeg files use a complex technique that compresses images, such as, photos. the colour of every pixel is different.

Animated GIF files:

an animated gif file, is a series of gif files all bonded together. the file of the size is determined by the sum of all the files that create the series.

MPEG files:

an mpeg file uses an algorithm. it tries to eliminate repetition between frames to compress video information.

Shockwave files:

a vector-based images/animations. a shockwave file specifies the coordinates of shapes as well as the colour of each shape. these files can be very small and allow animation and sound to be produced.



What is a vector-based image?

Vector based images contain well-defined elements such as shapes and curves of various colours. each element is defined mathematically on the computer.

What is a bitmap-based image?

Bitmap-based images do not rely on mathematical formulas to define elements. each image is mapped out on a grid. A bitmap-based image is like a mosaic of pixels.