Summary
Grackle is an accessibility checker that works with Google Docs, Google Sheets, and Google Slides. This article summarizes basic security, installation, and use information for Grackle.
Body
Environment
Google Docs, Sheets, and Slides
Issue
How do I use Grackle in my U-M Google account?
Resolution
Grackle is an accessibility checker that works with Google Docs, Sheets, and Slides.
Automatic checkers cannot find 100% of accessibility issues, but Grackle can help you make significant improvements. Please note that Grackle only can be used with native Google formats (Google Docs, Google Sheets, and Google Slides).
Security
The use of Grackle in U-M Google does not change the types of data permitted for use in U-M Google.
Install the Grackle Add-ons
For each format, do the following:
- Open a new or existing document
- Choose Extensions > Add-ons > Get add-ons
- Select the Grackle option
- Click on the Install button
- When a popup window appears, choose Continue
- Select your U-M Google account
- In the Signin popup, choose Continue
- In the Permissions window, choose Allow
- When Grackle finishes installing, it will give you a popup window letting you know how to access the version of Grackle for the Google app you are using.
Learn to Use Grackle
Find more details about using:
Running Grackle
For each format, do the following:
- Go to Extensions > Grackle (format) (or use the alternative instructions provided in step 9. above)
- From the submenu, choose Launch
- Grackle will immediately begin to check your document based on multiple types of elements (e.g., Presentation, Slides, Tables, Elements, and Contents for Grackle Slides)
- If any errors are found, a number will appear to the right of the element header, e.g.:

- For specific criteria that have errors, a red "Warning" icon will appear on top of a checkmark, e.g.:

- Click on the checkmark for more information and/or tools to fix the issue. Sometimes this will be straightforward. Criteria fixes that are not straightforward are documented in Grackle Accessibility: Limitations and Workarounds.
- When you have fixed the issues, click on the "Re-Check" button at the top of the Grackle window to verify fixes.
- When you are finished, click the "X" at the upper right of the Grackle window.
Additional Information
Need additional information or assistance? Contact the ITS Service Center.