How do I submit a PDF assignment with annotations in the Canvas app on my iOS device?
Canvas allows you to add annotations to PDF files for assignment submissions. Available annotations include highlight, underline, squiggly, strikeout, free text, drawing, and image.
The images in this lesson are shown for a phone display, but unless otherwise noted, tablet displays mirror the same steps.
In the Courses tab, tap the name of the course you'd like to view. Or if it is available, tap the Assignments icon.
Tap the Assignments link.
Tap the Assignment you want to open.
Tap the file link.
Tap the Edit icon.
On the toolbar you can manage your annotations.
To add highlight, underline, squiggle, or strikethrough annotations, tap and hold the Text Formatting icon .
To type text or add a comment, tap and hold the Free Text icon .
To add thin drawing, bold drawing, arrow, line, or shape annotations, tap and hold the Drawing icon .
To add an image, tap the Image icon .
To undo changes, tap the Undo icon .
To move the toolbar, tap and hold the drag handle , and move it to the new location. The toolbar can be relocated to either side of the screen.
Use Text Format Options
The Text Format option allows you to highlight , underline , squiggle , and strikethrough  text.
Use Free Text Options
The Free Text option allows you to add text  or add comments .
Use Drawing Options
The Drawing option allows you to draw thin lines , bold lines , arrows , lines , and rectangles . Tap the arrow to view additional shape drawing options .
Use Image Options
The Image option allows you to add an image.
When you are finished adding annotations, tap the Close icon.
Open Share Menu
Tap the Share icon.
Tap the Submit Assignment button.
Select Assignment Details
Tap the Course link  and select the course from the list. Then, tap the Assignment link  and select the assignment title from the list.
Tap the Submit link.