Restrict File Types for Assignments in Canvas
Modified on: Tue, 22 Apr 2025 1:08 PMIf you want to control the types of files students can upload to an assignment, Canvas allows you to restrict file types in the assignment settings. This ensures submissions are in a format that is ideal for the context of the assignment and works well with tools like SpeedGrader.
How to Restrict Upload File Types
These steps apply to an existing assignment.
- Open the assignment and click Edit.
- Under Submission Type, select Online.
- Check the box for File Uploads.
- Check the box for Restrict Upload File Types.
- In the text box that appears, type the allowed file extensions:
- Extensions can be lowercase, uppercase, or include periods.
- Separate multiple types with commas (e.g.,
doc, pdf
). - Spaces, capital letters, and periods are allowed as long as the list is separated by commas.
FAQ: Restrict File Types for Assignments in Canvas
Can students see which file types are allowed?
Yes. On the Assignment page, Canvas displays the accepted file types clearly to students under the submission area.
What happens if a student uploads the wrong file type?
The file picker generally prevents students from selecting disallowed file types. If a student manages to select an unsupported type, Canvas will block the upload and display an error message such as "Invalid submission file type."
Common File Types to Allow
The table below includes common file formats and explanations for when and why to use them.
File Type | Explanation |
---|---|
.pdf |
Portable Document Format. Keeps formatting intact across platforms. Ideal for finalized submissions and works seamlessly in SpeedGrader. |
.doc |
Microsoft Word’s older format. Still widely accepted and compatible with SpeedGrader, though replaced by .docx in newer versions. |
.docx |
Current Microsoft Word format. Best for assignments that require text formatting and annotations within SpeedGrader. |
.pages |
Apple’s Pages format. Not supported on Windows or SpeedGrader. Students should export as PDF or DOCX before submitting. |
.txt |
Plain text with no formatting. Good for code or notes but not ideal for content requiring structure or inline feedback. |
.rtf |
Rich Text Format. Supports basic formatting but may render inconsistently. Use with caution for formal submissions. |
.html |
Used for web development submissions. Not viewable in SpeedGrader unless downloaded and opened separately. |