IMPORTANT Note to Presenters

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IMPORTANT Note to Presenters

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• On this slide, the notes start with NOTES
  SECTION

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WCAG 2.0Web Content Accessibility
GuidelinesUpdate

• DRAFT Last Updated 16 August 2007

Note This document contains unapproved draft
ideas and should not be referenced or quoted
under any circumstances.
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Talk about today

• What is WCAG- along with Who, Where, When, Why,
  and How
• What WCAG 2 gives you- Applies to more advanced
  technologies- Clearer criteria- Flexible,
  adaptable- Practical implementation examples and
  info
• Making accessibility easier better- Authoring
  tools and browsers
• What you can do now

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We wont cover

• The basics of Web accessibility and WCAG 1.0
• The business case
• Policies, laws,
• and such
• Will provide resources for these.

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WCAG Web Content Accessibility Guidelines

• International standard
• Applies to Web pages, sites, applications
• For
• Web developers and designers,
• Authoring tool and evaluation tool developers,
  and
• Others who need a technical standard.
• (not for novices)

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Who develops WCAG

• The standards-making body for the Web
• International, multi-stakeholder
• Formal process

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How WCAG is developed, Stage 1

• WCAG Working Group development
• CommunityPublic review and comment

WCAG Working Draft
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Getting better with age

• For example, clearer with less jargon
• 2006 Draft4.1.1 Web units or authored
  components can be parsed unambiguously, and the
  relationships in the resulting data structure are
  also unambiguous.
• 2007 draft4.1.1 Parsing Content implemented
  using markup languages has elements with complete
  start and end tags, except as allowed by their
  specifications, and are nested according to their
  specifications.

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Getting better with age

• Note new and improved documents
• WCAG 2 FAQ
• WCAG 2.0 Quick Reference
• Summary of Issues, Revisions, and Rationales for
  Changes to WCAG 2.0 2006 Last Call Draft

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When will WCAG 2.0be completed?
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Milestones

• Working Drafts
• Last Call Working Draft

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Milestones

• Public Working Drafts
• Last Call Working Draft
• Candidate Recommendation
• Implementations
• Proposed Recommendation
• W3C Recommendation Web Standard

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How WAI Develops Accessibility Guidelines through
the W3C Process Milestones and Opportunities to
Contribute
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WCAG 1.0 --gt WCAG 2.0
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• WCAG 2.0 WD
• Principles
• Guidelines

• WCAG 1.0
• Guidelines

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• WCAG 2.0 WD
• Principles POUR
• Perceivable
• Operable
• Understandable
• Robust
• Guidelines

• WCAG 1.0
• Guidelines

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What WCAG 2 gives you

• Easier to understand success, that ismore
  precisely testable(do still need human)

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• WCAG 2.0 WD
• Principles P-O-U-R
• Guidelines
• Success CriteriaLevel A, AA, AAA

• WCAG 1.0
• Guidelines
• CheckpointsPriority 1, 2, 3

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• WCAG 1.0 Checkpoint
• 2.2 Ensure that foreground and background color
  combinations provide sufficient contrast when
  viewed by someone having color deficits

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• WCAG 1.0 Checkpoint
• 2.2 Ensure that foreground and background color
  combinations provide sufficient contrast when
  viewed by someone having color deficits
• WCAG 2.0 Success Criteria
• Text (and images of text) have a contrast ratio
  of at least 51(from the May 2007 Draft)

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What WCAG 2 gives you

• Applies to more advanced Web technologies-
  current, future, non-W3C
• Adaptable, flexiblefor different situations,and
  developingtechnologies and techniques

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WCAG 2.0

• www.w3.org/TR/WCAG20/
• Formal Web standard draft, planned to become a
  W3C Recommendation
• Normative

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WCAG 2.0
Techniques

• Informativesupporting document
• Examples for HTML, CSS, etc.
• Can be updated

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WCAG 2.0 requirements are more flexible
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More design flexibility

• WCAG 1.0 Checkpoint 7.1Until user agents allow
  users to control flickering, avoid causing the
  screen to flicker
• WCAG 2.0 allows more movement within defined
  parameters

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Scripting allowed!
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Scripting Techniques

• Providing client-side validation and alert
• Using functions of the Document Object Model
  (DOM) to add content to a page
• Using Dynamic Web Content Accessibility to
  programmatically identify form fields as required
• . . .

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Flexibility for rich Internet applications

• WAI-ARIAAccessible Rich Internet Applications
  Suite
• Techniques for meeting WCAG 2.0
• E.g., accessible and highly usable expanding and
  collapsing menus/tree controls/nav bars

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WAI-ARIA status

• Implementations already in browser and screen
  reader
• Documents
• Technical material for tool and specification
  developers
• Best practices for Web content developers

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WCAG 2.0 flexibility for different situations

• Accessibility Supported Technologies(formerly
  Baseline)

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What WCAG 2 gives you

• Extensive supporting materials, - practical
  implementation guidance

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• WCAG 2.0 WD
• Principles P-O-U-R
• Guidelines
• Success CriteriaLevel A, AA, AAA
• 2.0 Support
• Techniques
• Understanding

• WCAG 1.0
• Guidelines
• CheckpointsPriority 1, 2, 3
• 1.0 Support
• Techniques

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Techniques
WCAG 2.0
Understanding

• Informativesupporting document
• Reference manual

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Techniques
WCAG 2.0
Understanding
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Techniques
WCAG 2.0
Quick Reference!
Understanding
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Overview
WCAG 2 FAQ
Issues, Changes
Techniques
WCAG 2.0
Quick Reference!
Understanding
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What WCAG 2 gives you

• Applies to more advanced Web technologies-
  current, future, non-W3C
• Adaptable, flexible for different situations,and
  developing technologies and techniques
• More precisely testable
• Extensive supporting materials, - practical
  implementation guidance

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Accessibility ? WCAGAccessibility people using
Web

• WAI Resources
• How People with Disabilities Use the Web
• Involving Users in Web Accessibility Design and
  Evaluation
• Videos

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Understanding accessibility issues how people
with disabilities use your site
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Who is responsible forWeb accessibility?
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Components of Web Accessibility
Web Content(WCAG)
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Components of Web Accessibility
Web Content(WCAG)
User Agent(UAAG)
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Components of Web Accessibility
Web Content(WCAG)
User Agent(UAAG)
Authoring Tool(ATAG)
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Making accessibilityeasier for site
developersand better for users!
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Actively encourageaccessibility improvementsin
tools
A c t i o n !
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What else you can do now
A c t i o n !
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Get into WCAG 2.0 Drafts
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Start here with WCAG 2.0

• Using it
• www.w3.org/WAI/WCAG20/quickref/

• Learning about it
• www.w3.org/WAI/intro/wcag20.php

Quick Reference!
Overview
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Talked about today

• What is WCAG- along with Who, Where, When, Why,
  and How
• What WCAG 2 gives you- Applies to more advanced
  technologies- Clearer criteria- Flexible,
  adaptable- Practical implementation examples and
  info
• Making accessibility easier better- Authoring
  tools and browsers
• What you can do now

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Questions?

• WCAG 2 FAQwww.w3.org/WAI/WCAG20/wcag2faq
• WAI Interest Group mailing listarchivehttp//li
  sts.w3.org/Archives/Public/w3c-wai-ig/subscribe
  www.w3.org/WAI/IG/Overview.htmlUselist

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Actively encourage real accessibilityReward web
sites, tools, developers,Thank you!
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• W3C WAIwww.w3.org/WAI/
• Introduction to Web Accessibilitywww.w3.org/WAI/i
  ntro/accessibility
• Understanding Web Accessibility??non-W3C
  ok?www.uiaccess.com/understanding.html
• Developing a Web Accessibility Business Case for
  Your Organization www.w3.org/WAI/bcase/Overview
• How WAI Develops Accessibility Guidelines through
  the W3C Processwww.w3.org/WAI/intro/w3c-process
• WAI Resourceswww.w3.org/WAI/Resources/Overview

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• Overview of WCAG 2.0 Documentswww.w3.org/WAI/intr
  o/wcag20
• WCAG 2 FAQwww.w3.org/WAI/WCAG20/wcag2faq
• WCAG 2.0 Quick Referencewww.w3.org/WAI/WCAG20/qui
  ckref/
• Summary of Issues, Revisions, and Rationales for
  Changes to WCAG 2.0 2006 Last Call
  Draftwww.w3.org/WAI/GL/2007/05/change-summary
• WAI-ARIA Suite Overview www.w3.org/WAI/intro/aria