Accessibility based on WCAG 2.0
Web Content Accessibility Guidelines (WCAG) 2.0 covers a wide range
of recommendations for making web content more accessible.
According to the W3C, content on a web page or web applications
(including text, images, forms and sounds) should be:
- Perceivable: usable regardless of a person’s ability to see, hear or
- Operable: usable forms, controls and navigation.
- Understandable: content and interface are clear and easy to
- Robust: content can be used reliably by a wide range of devices.
It is important that accessibility is an on-going commitment. While a site
may comply with WCAG 2.0 at its launch, those standards also need to
be maintained as new content and features are added.
Factors that help improve accessibility include:
- Using clear labels for navigation and important buttons.
- Using clear and simple language.
- Ensuring that information does not rely solely on colour.
- Providing accessible documents.
- Providing Alt Text, transcripts or captions for video and audio
content. A good summary may be provided to identify what the
video/audio is about.
- Providing information in different ways.
For example, offer the person the option of having information in
formats such as large print, Braille or ‘easy to read’.
‘Easy to read’ is designed to be both easier to read and understand.
It is of specific benefit for people with intellectual difficulties but may
also benefit younger readers and people with very low literacy levels.
Typically, ‘easy to read’ content is supported by images that help
explain the text.
- Evaluating the accessibility of a website. When developing or
redesigning a site, evaluating accessibility early and during the
development process can identify accessibility problems when it is
easier to address them.