Command: Check Accessibility
Alt + R A A runs the Check Accessibility feature in Excel. This opens the Accessibility Checker pane which scans your workbook for accessibility issues like missing alt text, merged cells, and other problems that may make the content difficult for users with disabilities.
This is how to do Alt + R A A on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.