A banner is an advertising format based on a graphic image (in JPEG, GIF or PNG) that can be static (JPEG, PNG) or animated (GIF).
Banners are located in the header of www.interempresas.net, www.ieferia.com and www.iemaq.com.
Related formats:

The accepted image formats for banners and buttons in newsletters and alerts are JPEG, PNG or static GIFs. Animated GIFs can be used, but many email managers only display the first frame and not the entire animation. It is therefore necessary to use GIF images without animation (or, in any case, with a first frame that is sufficient to understand the entire message to be conveyed).
Each banner or button includes a link to a destination page (ideally a dedicated landing page created by the advertiser).
Interempresas tracks the number of impressions (times displayed) and clicks received.