Online tools for checking webpages for compliance with standards for accessibility to those with visual disabilities.

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Accessibility Code Sniffer
The tool checks pasted HTML code and detects violations of all levels of WCAG 2.0 and Section 508 guidelines.
Accessibility Color Wheel
A tool to help choose a color pair with good contrast and suitable for text and background of accessible sites. It simulates also various kinds of color-blindness.
Very simple tool to alert webmasters of common accessibility issues on a given page.
ATRC Web Accessibility Checker
Analyses a page for conformance with WCAG 1.0 and 2.0, BITV 1.0, Section 508, and the Stanca Act.
Check My Colours
Tool allows to analyze the colors of any webpage to verify optimal contrasts for better accessibility.
Color Vision
Test website foreground/background colors for contrast and clarity to color blind visitors.
Color-Blind Design Evaluation
Tool to show what website colors look like to color-blind people.
Colorblind Web Site Filter
View web pages through the eyes of visitors with three different types of color blindness.
Contrast Ratio Tool
Simple tool to calculate color contrast ratios.
The tool evaluates the contrast ratio of two colors and provides alternative colors with better contrast.
Cynthia Says
The tool allows to tests websites against predefined checkpoint groups to validate it against various accessibility guidelines.
Juicy Studio: Colour Contrast Analyser
Uses the W3C algorithm to check for sufficient contrast between background and foreground colours.
OCAWA Accessibility Validator
Standing for Operational Control and Analysis for Web Accessibility. OCAWA tests the accessibility of websites using international accessibility standards.
Readability Test
A variety of reading level algorithms help to determine how easily readable the content of a specified web page is.
Site Valet
Tool to check websites for quality, accessibility and web standards compliance.
Tool helps to identify 508 and WCAG 2.0 issues. Algorithms help to prioritize what to fix first.
VamolĂ  Web Accessibility Checker
Tool to check websites, uploaded or pasted HTML against Allegato A L.4/04 and WCAG 2.0 (Level A to AAA) accessibility guidelines.
Allows the user to see the world as color blind people see it. Checks by images and urls.
WAVE 3.0 Accessibility Tool
Online tool checks page accessibility, displays page with tags to show good and bad points.
Web Accessibility Analysis
A combined interface for a collection of tools for web standard and accessibility testing.
Webthing Accessibility Valet
Tool allows to validate different accessibility levels of websites.
[Wheelchair Mozilla]
Last update:
June 23, 2016 at 7:41:38 UTC
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