Files can house course files, assignments, syllabi, readings, or other documents, as well as profile pictures and user-specific files. Instructors can lock folders and files so they can only be viewed by direct links or only unlock on a specific date.
Files can be placed in Modules, Assignments, or Pages. Files and folders are put in alphabetical order and cannot be rearranged.
Canvas users will find access to files (documents, images, media, etc.) in three different places:
Personal files, located in each user's profile (students, teachers, and TAs)
Course files, located in each course (students, teachers, and TAs unless files are locked by the teacher)
Group files, located in each group (students and teachers who are enrolled in groups)
To learn about specific file quota details for each user role, view the Course Files Quota PDF.
From Canvas Basics Guide > What are Files?