WCAG 2.0
WCAG steht für Web Content Accessibility Guidelines (WCAG) und sind als Empfehlungen der WAI (Web Accessibility Initiative) des W3C (World Wide Web Consortium) zu verstehen. Nach langer Zeit ist nun die WCAG 2.0 verabschiedet. Es hat zwischen der Version WCAG 1.0, die es seit 1999 gibt, nun einige Zeit gebraucht, die neue WCAG zu verabschieden.
Unter http://www.w3.org/WAI/ kann direkt nachgelesen werden, was alles unter der WCAG 2.0 verstanden wird. Ein sehr gut gemachtes Video von Shawn Henry ist unter http://yuiblog.com/blog/2007/08/15/video-henry/ zu finden, was das Update so beinhaltet.
Hier im folgenden die direkten Links in das aktuelle Werk WCAG 2.0
- Perceivable – Information and user interface components must be presentable to users in ways they can perceive.
- 1.1 Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.
- 1.2 Provide alternatives for time-based media.
- 1.3 Create content that can be presented in different ways (for example simpler layout) without losing information or structure.
- 1.4 Make it easier for users to see and hear content including separating foreground from background.
- Operable – User interface components and navigation must be operable.
- 2.1 Make all functionality available from a keyboard.
- 2.2 Provide users enough time to read and use content.
- 2.3 Do not design content in a way that is known to cause seizures.
- 2.4 Provide ways to help users navigate, find content, and determine where they are.
- Understandable – Information and the operation of user interface must be understandable.
- 3.1 Make text content readable and understandable.
- 3.2 Make Web pages appear and operate in predictable ways.
- 3.3 Help users avoid and correct mistakes.
- Robust – Content must be robust enough that it can be interpreted reliably by a wide variety of user agents, including assistive technologies.
- 4.1 Maximize compatibility with current and future user agents, including assistive technologies.