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Accessibility Resources (Tools)
Living style guide, generated from KSS documented styles...with an accessibility twist.
When activated, the WAVE extension injects icons and indicators into your page to give feedback about accessibility and to facilitate manual evaluation.
Sidebar presenting full WCAG support with the possibility to generate and export reports.
Uses the OpenAjax open source evaluation library, rules and rulesets, but cannot generate reports, docs and latest release on GitHub.
Open-source accessibility testing tool by Deque.
Originally in French; A11y, UX, SEO and more.
Very complete sidebar contrast checker, on top of which is provided a filter to simulate 4 types of colorblindness.
Good for checking ARIA features, tables and color contrast. Needs updates.
Renders a text version of a web page similar to how a screen reader would read it. While somewhat outdated and not a substitute for testing with the screen-reader, it proved to be a useful first-time tool for inexperienced designers and developers, that helped to better understand how blind and visually impaired learners perceive a web application.
Good set of a11y checkers, no updates for a while.
Simulates colorblindness through a dedicated drop-down in the Responsive Design tool. Needs updates.
Web accessibility evaluation tool developed by WebAIM.org.
Adds an Accessibility audit and an Accessibility sidebar pane to the Elements tab of your Chrome Developer Tools.
Open-source accessibility testing tool by Deque.
Continuously monitor accessibility failures in a page as it's being used, rather than a single audit on page load.
Evaluation tool helpful for understanding several vision problems and deficiencies.
Evaluation tool for different types of color vision deficiency.
Pick colors, compute contrast, get suggestions & preview with challenged visions.
Helps visualize the most common accessibility violations (and successes).
Detects violations of both Web Content Accessibility Guidelines (WCAG) 2.0 (all three conformance levels), and the web-related components of the U.S. "Section 508" legislation.
Allows any sighted person to physically see the use of ARIA on public websites.
Several handy a11y assessment favelets/bookmarklets.
By Lea Verou.
Find an accessible color pair and compare contrast with simulation of three types of color deficiency: deuteranopia, protanopia and tritanopia.
Accessible color palettes based on WCAG Guidelines of text and background contrast ratios.
Online tool for analyzing color combinations that meet WCAG 2 a11y specifications.
Standalone tool; provides a pass/fail check for WCAG 2.0 contrast criteria; simulates certain visual conditions.
Full HTML, CSS, WCAG & Section 508 online assessment tool.
Sitewide evaluation and reports (requires registration).
Choosing an Automated Accessibility Testing Tool: 13 Questions you should ask
The Accessibility Engine for automated testing of HTML-based user interfaces.
Requires Node.js and PhantomJS; Custom Reporters option.
Very complete website a11y assessment tool; basic and advanced Scenario audits based on Selenium).