My students had an assignment that they turned in as a high resolution PDF. I added notes to the PDF and want to get it back to each of them individually. Is there a way to do this (post the PDFs on Canvas) besides just email?
Are you planning to grade the students for their work in this assignment? You can return the annotated files to students through Canvas itself, when you enter the grades in via SpeedGrader.
See 'Add File Comment' in How do I leave feedback comments for student submissions in SpeedGrader?
Students will then be able to see their grade and your annotated PDF file once the assignment is un-muted (assuming it is currently muted in the Gradebook).
You can make this process faster if you are looking to upload those feedback files in bulk and they are all ready. This is possible through the 'Re-upload Submissions' feature here: How do I upload all student submissions for an assignment?
Retrieving data ...