The Web Content Accessibility Guidelines (WCAG) 2.0 became live in December 2008. The full WCAG 2.0 guidelines are available from the W3C website.
The new guidelines are divided into 4 main sections:
1. Perceivable
2. Operable
3. Understandable
4. Robust
Below is a very brief summary of what is included within the 4 WCAG sections.
WCAG 2.0
1. Perceivable
Web content can be seen and heard
- 1.1 Text alternatives – Alt text for images, labels for form controls, identification of embedded multimedia.
- 1.2 Time-based Media – Transcript of online audio files (MP3s and podcasts), transcript for web video. Captions for multimedia files.
- 1.3 Adaptable – Correct use of headings, tables and lists in the HTML code. Flexibility to change page layout without damaging it’s structure.
- 1.4 Distinguishable – Contrasting foreground and background colours. Colour is not used as the sole mechanism for displaying content or interaction.
2. Operable
The page is operable
- 2.1 Keyboard accessible – The web page can be used via the keyboard
- 2.2 Enough time – Users have the ability to pause or cancel time based interactions.
- 2.3 Seizures – No flashing components that may cause a seizure
- 2.4 Navigable – Skip navigation option, descriptive page titles, clear link text meaning
3. Understandable
Page content and interface understandable
- 3.1 Readable – Correct use of the html lang attribute and abbr tag.
- 3.2 Predictable – Consistent navigation, no major page events (such as pop ups) on changes to focus or interaction
- 3.3 Input assistance – Identify required fields in a controls label, provide cues or error alerts.
4. Robust
Can be used by multiple browsers or devices
- 4.1 Compatible – Validate the pages