If you haven't already checked out the Digital Accessibility Basics Training Series, please do so when you have a chance! This series will provide some context for any of the accessibility evaluation tools listed below.

Digital Accessibility Checklists

How do you find the right accessibility checklist to use during the design process? Well, the World Wide Web Consortium does make a series of resources available to verify the accessibility of your digital content.

These checklists can be helpful to developers but may be overwhelming for content editors who have less experience with digital design. That being the case, Web Accessibility in Mind, or WebAIM, has developed a more digestible set of accessibility principles: Quick Reference: Web Accessibility Principles. They have also created a more user-friendly version of the WCAG 2 checklists: WCAG 2 Checklist.

Automated Accessibility Evaluation Tools

There are a significant number of free automated accessibility evaluation tools available online. Siteimprove is an automated quality assurance tool to which all pdx.edu content editors may request access via the Siteimprove Access Request form. In addition to measuring quality assurance by detecting things like misspellings and broken links, Siteimprove will also test for common accessibility issues like missing alternate text or heading structure. The following are some additional automated accessibility evaluation tools that may be helpful to you:

Note that automated accessibility evaluation tools will only help you to locate and repair the most obvious accessibility issues. To ensure WCAG 2.0 compliance, you must evaluate materials manually.

Manual Testing with Adaptive Technology

At minimum, digital content should be tested for navigation structure, keyboard accessibility, use of color, and media accessibility. Optimally, screen reading software can be used to determine whether all functions can be accessed equitably via keyboard. The following are some resources to help you get started:

Niklas Petersson, a native screen reader user from Miles Access Skills Training, created the following two, short videos illustrating the way someone who uses screen reading software might access images:

Color Contrast Evaluation Tools

In order to use a color contrast evaluation tool, you will need the hex or RGB key for the background and foreground colors you plan to use. If you are unable to determine this information easily within your content editing tool, you may use a tool like the ColorZilla Chrome Extension.

Once you've determined the hex or RGB keys, you can use any of the following color contrast ratio checkers to evaluate contrast between background and foreground colors. WCAG 2.0 guidelines recommend at least a 4.5:1 contrast ratio. All of these color contrast checkers will indicate whether or not specific color combinations comply with WCAG 2.0 Levels A and AA, at or below size 18 font.