In the online world, a banner is a rectangular or square advertisement placed on a website, which includes graphic images and text, and links to the advertiser’s website or to another page in the same website.

Banners are often used as hero images for category pages in e-commerce websites, as well as for presentation websites, if their main purpose is to draw attention to a specific product or service. Banners can be placed anywhere on a website, but are typically located above or below the main content blocks, or in the website’s sidebars.