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Updated 12 August 2010 Benefits of Web Content Accessibility Guidelines WCAG 2 Developed with material from the W3C Web Accessibility Initiative (WAI)

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 is  Web Content Accessibility Guidelines 2.0  Web “content” = web pages, websites, web applications, …

Developed with material from W3C Web Accessibility Initiative (WAI) “ [quote G3ict] WCAG 2.0 creates the foundation for a new level of standardization of web accessibility around the world. Its practical and well documented guidelines will allow web participants in many countries to evolve from a disparate set of practices to a unified approach to web accessibility for all. ̶ Axel Leblois, Executive Director, G3ict, United Nation Global Initiative for Inclusive ICTs

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 gives you  Cooperatively developed international standard  Applies to more advanced technologies  Clearer criteria  Flexible, adaptable  Practical implementation examples and info

Developed with material from W3C Web Accessibility Initiative (WAI)  Standards making body for the Web  International, multi-stakeholder development  Formal process for broad public review Who develops WCAG

Developed with material from W3C Web Accessibility Initiative (WAI) How WCAG is developed WCAG Working Group development Public review and comment WCAG 2 Working Draft

Developed with material from W3C Web Accessibility Initiative (WAI) Milestones  Public Working Drafts  Last Call Working Draft  Candidate Recommendation - Implementations  Proposed Recommendation  W3C Recommendation=Web Standard December 2008

Developed with material from W3C Web Accessibility Initiative (WAI) Cooperation with accessibility policies around the world

Developed with material from W3C Web Accessibility Initiative (WAI) 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

Developed with material from W3C Web Accessibility Initiative (WAI) Authorized Translations  Policy for Authorized W3C Translations  WCAG 2.0 Translations

Developed with material from W3C Web Accessibility Initiative (WAI) 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

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 gives you  Advances from WCAG 1 to WCAG 2

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 gives you  Applies to more advanced technologies - current, future, non-W3C

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2  W3C Web Standard  Stable  Technology-independent, broadly applicable  Defines functionality required by users

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

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 gives you  Clearer “success criteria”, more precisely testable (still need human judgment)

Developed with material from W3C Web Accessibility Initiative (WAI) 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…

Questionable color contrast:

Developed with material from W3C Web Accessibility Initiative (WAI) 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…

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 gives you  Adaptable, flexible for different situations, and developing technologies and techniques Techniques for different situations, can use other techniques

Developed with material from W3C Web Accessibility Initiative (WAI) 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…

Developed with material from W3C Web Accessibility Initiative (WAI) Scripting allowed!

Developed with material from W3C Web Accessibility Initiative (WAI) 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 ...

Developed with material from W3C Web Accessibility Initiative (WAI) 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

Developed with material from W3C Web Accessibility Initiative (WAI) Adaptability through accessibility-supported ways of using technologies

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 gives you  Extensive supporting materials, practical implementation guidance

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

Developed with material from W3C Web Accessibility Initiative (WAI) [How to Meet WCAG 2]  Lists the WCAG 2 requirements  Provides summary information from the other documents  Links to details

Quick Reference screen shot

Developed with material from W3C Web Accessibility Initiative (WAI) 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

Developed with material from W3C Web Accessibility Initiative (WAI) “ [quote EDF] By giving clear technical specifications to website designers, and unifying web- accessibility standards, WCAG 2.0 directly benefits users who have accessibility needs due to disabilities. It represents a crucial tool with which to build a better and more inclusive web. ̶ Yannis Vardakastanis, European Disability Forum (EDF)

Developed with material from W3C Web Accessibility Initiative (WAI) Questions?  WAI home page  WAI Interest Group

Developed with material from W3C Web Accessibility Initiative (WAI) Source Material Web Accessibility Initiative (WAI) Benefits of WCAG 2. Shawn Lawton Henry, ed. Copyright © 2010 W3C® (MIT, ERCIM, Keio). WCAG20_benefits/Overview

Developed with material from W3C Web Accessibility Initiative (WAI) 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

Developed with material from W3C Web Accessibility Initiative (WAI) WCAG 2 benefits you!

Developed with material from W3C Web Accessibility Initiative (WAI) About this presentation Please read carefully the Instructions for the "Benefits of WCAG 2" Presentation at for an introduction, tips, and permission to use. Please send any feedback and suggestions for improving these presentation materials to Copyright © W3C® (MIT, ERCIM, Keio) See