As an invited speaker for World Usability Day in 2013, these slides feature are an introduction to Accessibility Testing for students in the Mount Royal University information design program.
4. “The power of the web is in its
universality. Access by everyone
regardless of disability is an
essential aspect.”
Sir Tim Berners-Lee, Inventor of the WWW
5. Different users. Different needs.
• Closed Captions
• Meaningful Link Text
• Alternative Navigation
• Relative Sizing
• Logical Content Order
9. •
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Misuse of alt text
Missing alt attributes
Charts and graphs
CSS images
Title attributes
Baked image text
(brand/logo exception)
10. 1. Compile UI components – modules,
containers, templates, pages
2. Prioritize frequency & prominence
3. Include elements typically challenging for
persons with disabilities.
4. Determine your target goal.
11. 1. Sanity Test w/o CSS & Images
2. Validate your code
3. Validate for Accessibility
• apply testing tools (at least 2) & verify results
• contrast/context/order/alternatives
4. Check keyboard Accessibility
5. Test with a screen reader
6. Verify against target goal
7. Conduct user testing
8. Rinse & Repeat
16. • Provides different views
• Determine target goal
• Summarizes results
• Instant Documentation
• Code inspector
* Wave is a tool to assist with evaluation, it’s not used to verify content is 100%
accessible.
17. 14 errors
181 alerts to verify
83 contrast errors
Style / No style
Maps to target
Show outline
http://wave.webaim.org
23. AODA
– Accessibility for Ontarians with Disabilities Act
WCAG 2.0
– Web Content Accessibility Guideline
BS 8878
– British Standards
CVAA
– 21st Century Communications Video Accessibility Act
Section 508
– US Federal Accessibility Law
ADA
– American’s with Disabilities Act
24. Involve Real People with Real Disabilities
PWD using AT will reveal
undiscovered issues
Include Seniors
25.
26. No silver bullet – only 25-30% of errors
Always requires manual testing
Subjective by nature
Won’t identify issues revealed by real
users with disabilities
• Not one size fits all – different types
of sites
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27. Your keyboard
WAVE
Screen readers
FANGS plugin
WAT Toolbar (IE)
Colour Contrast Analyzer
FireEyes
Diagnostic.css
NoCoffee Plugin
Firebug, Web Dev Toolbar
High Contrast Mode
http://www.webaim.org
http://www.w3.org/WAI
https://atutor.ca
https://www.webaccessibility.com
http://www.webaxe.org
http://www.accessiq.org
28. • You are the most important testing tool
• Don't just say no, offer solutions
• Engage the community (befriend #a11y)
• Don’t fear what you don’t know
• BE A SPONGE
• Share your knowledge
Accessibility for Ontarians with Disabilities ActWeb Content Accessibility Guidelines – version 1 1999, version 2 2008 – now ISO standardBritish StandardsThe 21st Century Communications and Video Accessibility Act of 2010
No longer an option of it it will apply to me, it’s when will it apply to me.Accessibility for Ontarians with Disabilities ActWeb Content Accessibility Guidelines – version 1 1999, version 2 2008 – now ISO standardBritish StandardsThe 21st Century Communications and Video Accessibility Act of 2010
No longer an option of it it will apply to me, it’s when will it apply to me.Accessibility for Ontarians with Disabilities ActWeb Content Accessibility Guidelines – version 1 1999, version 2 2008 – now ISO standardBritish StandardsThe 21st Century Communications and Video Accessibility Act of 2010