I’ve been on a quest to help make research data more accessible by educating everyone about the steps that they can take to improve file accessibility. For someone who hasn’t done this work before, making accessible files can feel overwhelming. But today, I’m going to share a type of tool that will help make accessibility a little bit more achievable: the accessibility checker.
An accessibility checker is a tool that uses a set of established criteria to identify inaccessible content and point out how you can improve the accessibility of that content. Checkers can be built into software, available as a downloadable tool, usable as a browser plug-in, executable on the command line, and more. Checkers are also available for a wide range of content types and accessibility issues.
Let’s look at some examples of accessibility checkers. Common software that has a built-in an accessibility checker includes: Microsoft Word, Microsoft Powerpoint, Microsoft Excel, and Adobe Acrobat (the paid version). Other accessibility checkers are external tools, such as WebAIM’s Contrast Checker which looks for sufficient color contrast between tested colors. While Contrast Checker works for many types of files, other checkers work on one specific type of content. For example, the WAVE tool and Silktide both assess the accessibility of webpages. I’ve used all of these tools but if you need a different checker, I encourage you to check out the Web Accessibility Initiative’s list of over 100 accessibility checkers.
Accessibility checkers are really useful, particularly for those new to accessibility who are looking for a place to start, but they aren’t universal or foolproof. For example, I recently used Adobe Acrobat’s built-in accessibility checker to improve a workshop handout. While the checker found several issues for me to fix, it didn’t automatically test color contrast, which I had to test by hand. Checkers may also be insufficient for testing complex or interactive content. Despite this, I found these tools to be useful for giving me a starting point for improving accessibility by pointing out the most glaring issues.
If you’ve never thought about accessibility and want to make your content more accessible, I encourage you to try out an accessibility checker. It will do the work for you to identify content that’s not accessible, allowing you to focus on specific improvements. Checkers are not perfect, but they are a great tool for taking measured steps toward greater accessibility.



