Hello!

I work in accessibility of online courses.  I recommend instructors write alternative text to be as extensive as needed to relay the essential detail or data of an image or graphic to students. 

While Canvas has an excellent platform that allows instructors to do this, the accessibility checker tool flags descriptions as too long if over 120 characters per this page on the Alt Text Tool.

This is an outdated screen reader guideline and not a technical restriction of Canvas. Today's screen readers can handle any length of alt text and the checker tool guideline confuses instructors. 

Can this guideline be changed to reflect the latest capabilities of screen readers?  

I welcome other perspectives.

Thank you,
Mary