Images containing layers allow lower layers to show through the transparent backgrounds of layers above. Palette refers to a subset of the different colors an image supports or the set of colors used in an image. Resolution of an image specify the number of pixels per linear unit. While the resolution of a monitor is 72 dpi, a typical printer resolution can be 600 dpi. Images should contain a resolution that matches the presentation media.
Transparency allows for layers in the background to display through the higher layers.
Windows natively supports this image format. The earliest browsers supported this image type. GIF format is ideal for graphics that do not require large detail, like text, banner graphics, and graphics containing solid colors. GIF files support transparency and animation. GIF animation, a simpler animation type, uses a series of gif files to create an animation.