Alphonse Mucha Moët & Chandon Crémant Impérial poster (1899) Colour lithography

A poster is a large piece of printed paper that has a message, usually with picture of something. Posters are made to be shown in public on a wall or other flat surfaces. They were the main form of public advertising before the web, and they are still used.

Posters are used for advertising, education, propaganda, and decoration. They may also be copies of famous works of art.