There are several tools that simplify checking for accessibility. Check your documents and web content using the appropriate automated tools listed below.

Automated Testing Tools

Action Wizard - Acrobat DC

Click on Tools, then search for Action Wizard. Click on the Action Wizard icon to open the tool.

Search Tools for Action Wizard

In the toolbar on the right, select Make Accessible.

Make Accessible Wizard in Toolbar

Click on the Start button. Follow the prompts to fix items in the document. Click Close to return to the regular toolbar when finished.

Acrobat DC Make Accessible Start Button

Action Wizard - Acrobat XI

In the Toolbar, expand the Action Wizard. Click on the Make Accessible action.

Acrobat XI Make Accessible Wizard

When the tool opens, click on the Start button. Follow the prompts to add accessibility components to the PDF. When finished, click the Close button to return to the normal toolbar.

Make accessible wizard start button

Microsoft Office has a built-in tool that generates a report on the accessibility of a document. The tool is available in both Word and PowerPoint.

Note: The checker will not recognize “junk” alternate text, so it is still important to check images manually. Double-check that the alternate text is meaningful.

The Accessibility Checker is located under File > Info > Check for Issues > Check Accessibility.

Check for issues dropdown menu 

UDOIT Accessibility Checker

UDOIT is a Canvas plugin that allows you to check for accessibility within an entire Canvas course and fix problems on the fly.

  • UDOIT provides a short description of how and why to fix issues that it discovers. If you are not sure how to resolve an issue after UDOIT's explanation, please use the contact form to request further help.
  • UDOIT is unable to scan inside of uploaded documents (e.g. Word, PDF, PPT). It is your responsibility to make sure any uploaded files are accessible.

Fixing a Sample Error with UDOIT

Click on the UDOIT link in your course navigation.

In course navigation, click the UDOIT link

On the UDOIT page, click "Scan this course."

Click Scan this Course

Once the results display, scroll down to a section that has errors, and expand the entry. Below is an example of an image without appropriate alternate text.

Click on "View the source of this issue" to see the image without having to go search for it in the course.

Click "View the source of this issue" to see source information

As you can see below, the alt text is the same as the filename. Filenames are often long strings of characters without meaning and don't explain the function of the image. It needs a short, meaningful description instead.

Click on "U FIX IT!" to fix the problem right here and now without having to navigate away.

View Issue Source shows which image does not have alt text along with the code. Click U FIX IT! to open a text box to fix

In this case, a text box appears where you can type the description and then submit it. The change is now saved.

Text entry box opens for adding alt text description without navigating away

The WAVE tool is an automated checker that looks for potential accessibility issues on a webpage. The tool should be run on each page.

WAVE Tool: Summary Report

The first screen you see is a general report of all features that could affect accessibility on the page.

WAVE Summary

To look in more detail at report, click on the Flag icon. You can click on each flag to see where the potential problem is.

  • Red flags (errors) - these require attention
  • Yellow flags (alerts) - these require a manual check. The feature may not be a problem.

WAVE red and yellow flags

Outline View

Click on the outline view icon to see the structure of the page. You should see an outline of the content with properly nested headings.

WAVE outline view

Contrast Tab

Click over to the contrast tab. Although color is important for visual appeal, it is necessary to adjust colors to eliminate these errors for users with low vision or color blindness.

WAVE Tool contrast error report

Site Improve offers two different products.

There is a chrome SiteImprove toolbar similar to the WAVE accessibility toolbar.

Verifying Contrast – Solid Backgrounds
Installing the Colour Contrast Analyser (CCA)

When text is placed against a solid color background, we recommend you use the free Colour Contrast Analyser (CCA) to determine whether the contrast ratio passes WCAG AA standards.

On the download page under Assets:

  • For Mac, download the CCA-3.0.1.dmg file
  • For Windows, download the CCA-Setup-3.0.1.exe file

Download page with .dmg and .exe options

Using the CCA

Use the eyedropper tool to select foreground and background colors. The results display immediately, showing either pass or fail for both AA and AAA standards. In the following example, we’ve run the CCA on a website designed with orange headings, gray text, and blue link text.

website with poor contrast between headings and background

There is insufficient contrast between orange text and the white background. To find a different color with sufficient contrast, you can use the drop-down menu or insert hex codes. You would want to select a darker orange color from the drop-down color palette.

Colour Contrast Analyser, showing insufficient contrast between orange headings and white background


When we check the gray text against white background, the CCA shows mixed results. This color combination passes at the "AA" standard, but not the more stringent "AAA" standard, which is the goal for most university and public websites. A darker gray would be better.

Colour Contrast Analyser showing mixed results with gray text on white background

Finally, we test the blue link text against the white background. This combination of colors fails both the “AA” and “AAA” standards for normal text sizes, as well as the “AAA” test for larger sizes. It passes only the “AA” standard for large text. A darker blue is required for universal readability.

Colour Contrast Analyser showing failure with blue colored link text on a white background

Verifying Contrast – Photo or Gradient Backgrounds

The Paciello Group's Colour Contrast Analyser and the WAVE Tool both assume that text is placed against a solid background. They cannot always account for text placed on gradient backgrounds or images. In Chrome, you can use the Color Contrast Analyzer Extension, which evaluates a page exactly as it appears in the browser.

This tool repaints the page so that you can see the edges of the text, and discover which text fades into the background. If there is an item that is not outlined, then the item does not have sufficient contrast. The example below shows a before and after view of the extension. In the 'after' view, only the text that is outlined in white has sufficient contrast. You can see that the white text fades into the lighter areas of the background photo.

Image with faded text before using the colour contrast analyser extensionImage with faded text after using the colour contrast analyser extension.