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IMPORTANT: Instructions Please read carefully the Instructions for the "Benefits of WCAG 2" Presentation at www.w3.org/WAI/presentations/WCAG20_benefits/

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Presentation on theme: "IMPORTANT: Instructions Please read carefully the Instructions for the "Benefits of WCAG 2" Presentation at www.w3.org/WAI/presentations/WCAG20_benefits/"— Presentation transcript:

1 IMPORTANT: Instructions Please read carefully the Instructions for the "Benefits of WCAG 2" Presentation at for an introduction, tips, and permission to use. The Notes section for each slide contains important information. Make sure you can read the Notes. On this slide, the notes start with “[NOTES SECTION: This is where the important information is…]” Copyright © W3C® (MIT, ERCIM, Keio)

2 Benefits of Web Content Accessibility Guidelines WCAG 2 *DRAFT* Last Updated 13 July 2009

3 WCAG 2 is  Web Content Accessibility Guidelines 2.0  Web “content” = web pages, websites, web applications, …

4 WCAG 2 gives you  Cooperatively developed international standard  Applies to more advanced technologies  Clearer criteria  Flexible, adaptable  Practical implementation examples and info

5  Standards making body for the Web  International, multi-stakeholder development  Formal process for broad public review Who develops WCAG

6 How WCAG is developed, Stage 1 WCAG Working Group development Public review and comment WCAG 2 Working Draft

7 Milestones  Public Working Drafts  Last Call Working Draft  Candidate Recommendation - Implementations  Proposed Recommendation  W3C Recommendation=Web Standard December 2008

8 Cooperation with accessibility policies

9 Integrated Accessibility Guidelines  WCAG for web content  ATAG for authoring tools, HTML editors, content management systems (CMS), blogs, wikis, etc.  UAAG for web browsers, media players, and other ‘user agents’  WAI-ARIA for accessible rich Internet applications developed with Ajax and such

10 Authorized Translations  Policy for Authorized W3C Translations  WCAG 2.0 Translations

11 Cooperatively developed International standard W3C Web Accessibility Initiative (WAI) W3C process designed to: ensure broad public input, and encourage consensus development Cooperation with accessibility policies Integrated Web accessibility standards suite Authorized Translations

12 WCAG 2 gives you  Advances from WCAG 1 to WCAG 2

13 WCAG 2 gives you  Applies to more advanced technologies - current, future, non-W3C

14 WCAG 2  W3C Web Standard  Stable  Technology-independent, broadly applicable  Defines functionality required by users

15 Techniques document  Supporting document, “informative”  Can be updated

16 WCAG 2 gives you  Clearer “success criteria”, more precisely testable (still need human judgment)

17 Testable Example  WCAG 1.0 Checkpoint 2.2 Ensure that foreground and background color combinations provide sufficient contrast when viewed by someone having color deficits…

18 Questionable color contrast:

19 Testable Example  WCAG 1.0 Checkpoint 2.2 Ensure that foreground and background color combinations provide sufficient contrast when viewed by someone having color deficits…  WCAG 2 Success Criteria  The visual presentation of text and images of text has a contrast ratio of at least 4.5:1…

20 WCAG 2 gives you  Adaptable, flexible for different situations, and developing technologies and techniques Techniques for different situations can use other techniques

21 More design flexibility, e.g.:  WCAG 1.0 Until user agents allow users to …  avoid causing the screen to flicker.  avoid causing content to blink…  avoid movement in pages.  WCAG 2 allows more movement within defined parameters  Blinking…  Pausing…  Three Flashes or Below Threshold…  Three Flashes…

22 Scripting allowed!

23 Scripting Techniques  Providing client-side validation and alert  Providing a script that warns the user a time limit is about to expire  Using progressive enhancement to open new windows on user request  Using functions of the Document Object Model (DOM) to add content to a page ...

24 Flexibility for rich Internet applications (Ajax, DHTML)  WAI-ARIA: Accessible Rich Internet Applications Suite  For example, accessible and highly usable expanding and collapsing menus/tree controls/nav bars  Techniques for meeting WCAG 2

25 Adaptability through accessibility-supported technologies

26 WCAG 2 gives you  Extensive supporting materials, practical implementation guidance

27 Understanding document  Supporting document, “informative”  Can be updated

28 How to Meet WCAG 2 Quick Ref  Lists the WCAG 2 requirements  Provides summary information from the other documents  Links to details

29 Quick Reference screen shot

30 Additional support  Overview of WCAG 2 Documents  WCAG 2 FAQ  WCAG 2 at a Glance  WCAG 2 transition documents:  How WCAG 2 Differs from WCAG 1  Comparison of WCAG 1 to WCAG 2  How to Update Your Website

31 Questions?  WAI home page  WAI Interest Group

32 Source Material Benefits of WCAG 2 Web Content Accessibility Guidelines W3C WAI Education and Outreach Working Group WCAG20_benefits/

33 Benefits of WCAG 2  Cooperatively developed international standard  Applies to more advanced Web technologies  current, future, non-W3C  Clearer criteria, more precisely testable  Adaptable, flexible for different situations, and developing technologies and techniques  Extensive supporting materials, practical implementation guidance

34 WCAG 2 benefits you!

35 About this presentation Please read carefully the Instructions for the "Benefits of WCAG 2" Presentation at for an introduction, tips, and permission to use. Copyright © W3C® (MIT, ERCIM, Keio)


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