Design Exchange Presentation - Chris Ridpath

[Back to Design Exchange Presentation]


Accessibility Guidelines And Standards

Chris Ridpath
Software Designer/Programmer


The fun part of accessibility!

  • Standards
  • Conformance Levels
  • Specifications
  • Checkpoints
  • WCAG, 508, CLF, ODA

You may need to know about accessibility guidelines and standards if your site is required to confrom to them.

 

HTML Techniques

http://www.w3.org/TR/WCAG20-HTML-TECHS/

 

Web Content Accessibility Guidelines (WCAG)

  • http://www.w3.org/TR/WCAG10/
  • from Web Access Initiative (WAI)
  • International
  • Published in 1999
  • Covers Most Web Content
  • Voluntary - Not Legislation
  • 3 Levels

Section 508


Common Look And Feel (CLF)


Ontarians With Disabilities Act (ODA)

  • http://www.odacommittee.net/
  • Ontario Standard
  • First Version 2001
  • First Version Weak
  • 1 sentence: "The Government of Ontario shall provide its internet sites in a format that is accessible to persons with disabilities, unless it is not technically feasible to do so."
  • New Version (passed 3rd reading)
  • Will be good standard (likely based upon WCAG2)

International Standards

German Standard (BITV)

  • Similar To WCAG 1
  • More Practical And Functional

Euro Accessibility

  • Standards Under Development

WCAG 1.0 Themes

  • Ensuring Graceful Transformation
  • Content Understandable and Navigable
  • Guideline 1. Provide equivalent alternatives to auditory and visual content.
  • Checkpoint: 1.1 Provide a text equivalent for every non-text element.
  • Means "images must have alt text".
  • <img xhref="cat.jpg" alt="photo of a black and brown cat named Rex"/>

WCAG 1.0 in Haiku


WCAG Version 2

  • due for release this year
  • 6 years in the making
  • testable
  • well defined
  • cover all web content
  • technology agnostic
  • will likely apply to Canada
  • 3 levels

WCAG2 Lofty Principles

  • Preceivable
  • Operable
  • Understandable
  • Robust

"Preceivable" means images must have alt text

 

WCAG2 HTML Techniques


WCAG2, 3.2, L2, SC1

WCAG2 Components that are repeated on multiple delivery units within a resource or a section of a resource occur in the same sequence each time they are repeated, for at least one presentation format.

 

Conformance Logos

WCAG logo

  • Voluntary
  • Difficult to verify

WCAG2 Test Suite


Resources