The WAI which was created by World Wide Web Consortium (W3C) in the year 1997 is a set of guidelines intended for the web developers, authors, and the designers- about how to make a web content accessible to the people with disabilities. Goal of these guidelines is the accessibility, but they will also help to make the web contents available to more and more browsers like voice browsers, cell phones, hand-held devices and more users working in the difficult environments like hands-free, strong light, darkness, bad sight and heavy noise.

Millions of people with the disabilities are surfing Internet every day, and even more millions are using the poor browser equipment, or working under the difficult user environments. If the website lacks features such as the resizable fonts, images with the proper text descriptions, and an easy navigation, then these people will not be able to access the information.

Here are some of the reasons for making the site more accessible:

Use only the relative font sizes, and let users be able to use a browser menu to change a default text size.

An alt attribute do allows to provide the text equivalent for the image and for some other elements.

Sometimes the web browser will not display the images. The reason could be one of the many, like the user has turned off a display of the images, the browser is mini browser without an image display. A browser is voice browser used by the blind or the poor-sighted people. If you use an "alt" attribute, most of the browsers will at least do display or read a "alt" description.