Home | GIF Versus JPEG | Terms to Know

Here are some helpful terms to know when creating a web page.

Terms to Know

Examples

RGB: stands for Red, Green and Blue. Monitors create their images on the screen by emitting red, green and blue light.

RGB

Indexed Color: a limited selections of colors, called a palette, is made up of 256 colors. You can choose a color palette if you do not need all 256 colors. Limiting colors makes the file size smaller.

256 colors, 4.30KBMm5 colors, 1.14KB
MMMMM

Bit Depth: a bit bit is the smallest amount of information that a computer understands. The computer is divided into little pixels that can turn on or off. 1-bit monitors can only understand one bit of information at a time, either black or white. Now most monitors can understand 8-bits which can display 256 colors. There are now 16-bit and 24-bit computers.



Resolution: the number of pixels and the number of colors you monitor displays. Changing to a higher pixel count is called setting your monitor at a higher resolution because there are more pixels per inch.

Scanned images: always save scanned images in the TIFF file format. Later you will change it into a GIF or JPEG. You should scan images with a resolution of 72ppi to 150ppi if you are modifying the image.

Image Size: the dimensions of an image that are most commonly measured in inches, pixels, picas or centimeters.

Image: 1.8 X 1.92 inches or 90 X 96 pixels