Banner advertisements are graphical adverts that are displayed on web pages. Most often, a graphic, text message, or a combination of both is shown on the web page for the users to click on so that when they do, they are directly sent to the advertiser’s home page or to the created page where the advertiser intends the viewers to be brought.

Banners enable the webmasters optimize the use of the advertising space because banners equip them with the means to purchase or sell advertising space or fill their space with advertising contents of affiliate programs. Most commonly, banners are bitmap graphics or animations in GIF, JPEG or PNG format. JPEG or PNG banners are purely static pictures while GIF banners are mostly simple animations.

As a recommendation, it is better and more beneficial to get ASP, CGI, or PHP banner rotation script if banner adverts are to be displayed on a website. These scripts enable the advertiser to change the displayed banners easily without having to alter the HTML code every time the shown adverts are modified.