Why do you need web banners?
If you're creating a Website, it is always a good idea to properly label each page of your site with a heading. Many webmasters (or even notice web designers) choose to display a graphic image, or web banner, at the top of their web pages to "tell" the web page visitor what to expect on that page. The advantage of Graphic over text is human beings tend to be more responsive to visual images rather than just plain text.
So, if you are creating a Website right now or have one already that you are planning to refurbish, it is a good idea to incorporate attractive web banners in your design. Not only do web banners improve the aesthetics of your website, they allow a consistent location on your website where you can remind your visitors of your company's name, logo, and value that you have to offer them.