Involving people with disabilities from the early stages of a project and including participants with disabilities in usability testing—improving the accessibility of tools and technologies; taking advantage of the overlap between designing for accessibility and for mobile devices; promoting the business case for web accessibility; all of these are aspects of the broad field of web accessibility.
Usability professionals who understand this broader perspective can better integrate accessibility into their own work and contribute to improving web accessibility overall. The Web Accessibility Initiative (WAI) is a key resource for usable web accessibility. WAI is a group within the World Wide Web Consortium (W3C) international web standards organization.
User-Centered Design with Standards for Usable Accessibility
WAI supports user-centered design (UCD) and other techniques to develop websites, web applications, and web tools that are highly usable by people with disabilities. “Involving Users in Web Projects for Better, Easier Accessibility” and “Involving Users in Evaluating Web Accessibility” are directly addressed to web developers and project managers without usability expertise (and suggest “getting assistance from accessibility, disability, and user-centered design specialists”).
These documents help others understand what most usability professionals already know: that involving users early in the design process results in better products for uers and more efficient project development.
Overlap with Older Users, Mobile Users, and Other User Groups
WAI’s recent work explores in detail the relationship between designing for people with disabilities and designing for other “non-disabled” user populations who benefit from accessibility, such as:
- Older users – Gaining a better understanding the needs of older web users and how existing accessibility guidelines address those needs is one goal of the WAI-AGE Project, funded by the European Commission.
- Mobile devices – There is significant overlap between designing for mobile devices and designing for accessibility. Understanding this overlap helps designers more efficiently meet both goals.
- People with low bandwidth connections or older technology, people with low literacy or not fluent in the language, and new users.
Text Resizing Example
An example of how accessibility overlaps with other issues and the different components of web accessibility is resizing text in websites.
For years, common browsers have provided settings for text sizes. However, it only worked if website developers coded relative text sizes (for example, % or em) instead of absolute sizes (e.g., pt), and didn’t put text in images. Also, most browsers offered only five text sizes. That meant that many users were not able to increase the text size sufficiently or at all for most websites.
Now, many browsers provide zoom functionality. With zoom, users can change the text size (no matter how website developers code it) and images within a significant range, often 10-1000 percent. (Still many users aren’t aware of this functionality or are stuck using browsers without it.)
Text resizing through zoom illustrates where accessibility can be provided through the browser. This is an example of the shared responsibility of web accessibility—what we call the “Essential Components of Web Accessibility.”
WAI covers these components with guidelines for “user agents” (such as browsers and media players) and for authoring tools (such as WYSIWYG editors, content management systems [CMS], blog software, and social networking sites).
Text resizing benefits others as well: older users often need to resize text, and when designing for mobile device users, the W3C Mobile Web Best Practices (MWBP) says, “Do not use pixel measures and do not use absolute units…”
Comprehensive International Standards
These additional benefits are not always realized when designers use only limited standards. For example, current U.S. Section 508 web standards do not cover text resizing at all (and were published in 2000).
WAI’s accessibility standards are developed through the W3C process, with a goal of meeting the needs of individuals, organizations, and governments internationally.
As many national governments update their accessibility policies and standards (including the U.S. Section 508 and 255), adopting WCAG 2.0 and WAI’s other accessibility standards provides international harmony.
Supporting Awareness, Advocacy, Education
Accessibility standards are just part of a broad range of topics covered in WAI’s education and outreach materials, including presentations and handouts for anyone to use.
”Developing a Web Accessibility Business Case for Your Organization” presents benefits and costs of web accessibility covering social, technical, financial, and legal factors.
A new resources appendix provides statistics, case studies, and other articles.
Participating in WAI
WAI provides an international forum for collaboration among industry, disability organizations, accessibility researchers, government, and individuals interested in web accessibility.
Your contributions to improving usable accessibility of the web—through your own work or through WAI —are greatly appreciated.