Ally is an accessibility-checking tool built directly into Canvas/bCourses. It's the single most useful tool for this project, because it will diagnose most of your content's accessibility issues for you automatically.
For you (the instructor): scans your course content and tells you what's inaccessible and how to fix it
For students: automatically generates alternative versions of your files (audio, ePub, electronic braille, translated versions, and more) so students can access the same content in a format that works for them
Ally is automatically set up on bCourses, and runs in the background on any content that's already on your coursesite.
To measure accessibility, Ally assigns your content an accessibility score. Each score is composed of both a numerical number and a colored gauge that reflects the number.
Accessibility scores are determined by the severity of issues in each file. A low score indicates the file has severe or multiple accessibility issues; a high score means there are minor or no accessibility issues.
Scores range from Low to Perfect. The higher the score the fewer the issues.
Low (0-33%): Needs help! There are severe accessibility issues.
Medium (34-66%): A little better. The file is somewhat accessible and needs improvement.
High (67-99%): Almost there. The file is accessible but more improvements are possible.
Perfect (100%): Perfect! Ally didn't identify any accessibility issues but further improvements may still be possible.
Go into any Canvas course and look for the small gauge icon that appears next to files and content items; this indicates its current accessibility score.
This score is only visible to instructors, students never see it. What students do see is the "Alternative Formats" download icon, which is separate from the score and lets them grab an audio, ePub, or braille version of the same file.
Once you know the accessibility score, you can begin to explore the accessibility issues and improve your content to raise the score. Accessible documents are important for all audiences, and Ally gives you the tools to understand common issues and improve your course files.
Find a content item and select the Accessibility score indicator to view the instructor feedback panel.
This panel will show:
The specific issues found in that file (e.g., "This item contains text with insufficient contrast")
A "What this means" button for each issue: selecting it gives a short, plain-language explanation of the issue and why it's significant
A "How to" button with step-by-step instructions: these change depending on the file and issue, so a PDF might walk you through "How to Make a PDF Tagged" specifically
You can also select "All issues" to see every problem in the file at once and decide what to fix first if there are several.
You don't have to hunt file-by-file. Canvas/Ally also gives you a course-level view: the Course Accessibility Report provides a detailed overview of accessibility issues for all course materials in one place. This is the fastest way to triage an entire course at the start of a term, you can see everything red/orange at once instead of clicking through every page individually.