Web accessibility means that people can perceive, understand, navigate, and interact with the web, and that they can contribute to the Web. In other words we can say that Web accessibility is about making your website accessible to all Internet users regardless of what browsing technology they’re using. It includes other vision-impaired users such as color blindness or the elderly, those using older browsers, users on mobiles phones or PDA's, or simply someone on a slow internet connection. Web accessibility encompasses all disabilities that affect access to the web, including visual, auditory, physical, speech, cognitive, and neurological disabilities.

Feature of Web Accessibility

An accessible web site provides its user to navigate and interact with lots of features. Following are some of them:

• Web Accessibility provides significant information in the title, h1/h2 and image alt tags.
• Web Accessibility has the most useful information near the top.
• It is very fast to load.
• Web Accessibility has meaningful link text.
• It gives user control over pages, e.g. resizing text.
  Web Accessibility includes a text-based sitemap.

Importance of Web Accessibility

The web is an increasingly important resource in many aspects of life: education, employment, government, commerce, health care, recreation, and more. It is essential that the web be accessible in order to provide equal access and equal opportunity to people with disabilities. An accessible web can also help people with disabilities more actively participate in society. The web offers the possibility of unprecedented access to information and interaction for many people with disabilities. That is, the accessibility barriers to print, audio, and visual media can be much more easily overcome through web technologies.

Related resources for making the Web accessible can be found on the http://www.w3.org/WAI/