Paper prototyping uses paper sketches of web pages to design and evaluate how a website interface will work.
Paper prototyping lets you try out interface design ideas with users quickly and cheaply.
A paper prototype is a quick, low-quality sketch that omits all non-essential details. For example, a paper prototype usually represents a block of text as an empty box and an image as a box with a cross through it.
Paper prototypes for interface design do not represent the intended look of the completed website.
Later in the development of a website, visual designers communicate visual design ideas with other prototypes, referred to as comps and mockups.