What is Web Accessibility?
Generally, people refer web accessibility with screen readers or visual disabilities. However, the range of topics that it covers is vast and includes more than just the disabilities. For example, having an appropriate screen contrast for a person to see the screen on a sunny day is a use case for someone with a normal vision rather than for someone with a disability.
The World Wide Web Consortium has introduced some guidelines to achieve certain levels of accessibility to ensure that a website is as useful as possible. Published in 1999 as version 1.0 and later in 2008 as version 2.0, the WCAG 2.0 is generally accepted as the standard to measure when talking about web accessibility and the information you present to a user.