Evaluating Web Accessibility Overview


Video: Overview of Evaluation Resources

This video is also available on a W3C server (file format: MP4, file size: 2MB) - Overview of Evaluation Resources.

Text Transcript with Description of Visuals

Audio Visual
Web Accessibility Perspectives: Keyboard Compatibility Web Accessibility Perspectives:
Keyboard Compatibility
Not being able to use your computer because your mouse doesn't work, is frustrating. A man drops his computer mouse off the desk. The computer mouse no longer works.
Many people use only the keyboard to navigate websites — either through preference or circumstance.
Whether it's temporarily limited mobility, A woman with her arm in a sling is typing on a keyboard — but the website requires the use of a mouse to select the date.
a permanent physical disability, A man with a wheelchair is using a mouth-stick to type.
or simply a broken mouse,
the result is the same:
The man with the wheelchair also cannot use the site.
Websites and apps need to be operable by keyboard. He switches to a different website that allows typing the date.
Web accessibility: Essential for some, useful for all.  
Visit w3.org/WAI/perspectives for more information on Keyboard Compatibility Visit
for more information on
Keyboard Compatibility.
W3C Web Accessibility Initiative logo

When developing or redesigning a website or web application, evaluate accessibility early and throughout the development process to identify accessibility problems early, when it is easier to address them.

There are evaluation tools that help with evaluation. However, no tool alone can determine if a site meets accessibility standards. Knowledgeable human evaluation is required to determine if a site is accessible.

Initial Checks

Even if you don’t know anything about accessibility and you don’t have a robust accessibility tool, you can check some aspects of accessibility.

Easy Checks — A First Review of Web Accessibility
Provides step-by-step guidance and brief explanations for checking some aspects of accessibility.


Web accessibility evaluation tools are software programs or online services that help determine if web content meets accessibility standards.

Web Accessibility Evaluation Tools List
Includes information on more than 100 tools. You can use the filters to narrow down the list to the types of tools you are interested in.
Selecting Web Accessibility Evaluation Tools
Provides guidance on choosing tools. It describes the features and functionality of different types of evaluation tools, and discusses things to consider for your situation.

Conformance Evaluation

Conformance evaluation determines how well web pages or applications meet accessibility standards. W3C’s Website Accessibility Conformance Evaluation Methodology (WCAG-EM) is an approach for determining conformance to Web Content Accessibility Guidelines (WCAG).

WCAG-EM Overview: Website Accessibility Conformance Evaluation Methodology
A short page with basic information to get you started. We suggest you read it before going to the full WCAG-EM document.


Communicate the results of evaluation clearly, including the scope of the evaluation.

WCAG-EM Report Tool: Website Accessibility Evaluation Report Generator
Helps you generate evaluation reports according to WCAG-EM. It does not do the checking for you. It helps you follow the steps of WCAG-EM and it generates a report from the input you provide.
Template for Web Accessibility Evaluation Reports
Suggests information to include in a report.


Getting the right people and skills involved makes your accessibility evaluations more effective.

Involving Users in Evaluating Web Accessibility
Provides guidance on including people with disabilities (“users”) in evaluation throughout project development.
Using Combined Expertise to Evaluate Web Accessibility
Discusses skill sets and considerations for collaborative review.


Specifications for writing accessibility test rules (ACT Rules Format) and expressing test results (EARL) are introduced in Evaluation Standards Overview.

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