At its most basic, white space is the characters that don't print anything when you type them, for instance: tab, space, and carriage return. These are white space characters. But there is more to white space than just these characters.
White space in a design is the spaces around elements in the design to help them stand out or separate from the other elements. This includes the space on the edges of a fixed width layout and the space in the margins and padding around pictures and blocks of text (margins and padding). White space also includes the space between lines of text (leading) and letters in words (tracking and sometimes kerning).
Remember, too, that white space doesn't have to be white. If the background color of a design is black, then the white space will be black. White space is the areas of a design where there is no element placed by a designer.
Posted in: Web Design and Applications