How to remove a picture from Canvas as a student
To remove a picture you uploaded to Canvas, open the assignment or discussion where you posted it, find the image in your submission, and delete it before your instructor grades the work. The exact steps depend on whether the image is in a file you submitted, embedded in a discussion post, or attached to a message. Canvas does not let you edit a submission after your instructor has opened it to grade, so timing matters — if grading has started, you will need to contact your instructor to ask them to unlock the assignment so you can make changes.
The process takes less than a minute if the assignment is still open. If your instructor has already begun reviewing submissions, the image may be locked in place, and you will need instructor permission to modify it.
Key Takeaways
- You can only remove or edit pictures in Canvas submissions before your instructor begins grading the assignment.
- Pictures embedded in discussion posts can be deleted by editing the post, but only within the time window your instructor allows for edits.
- If grading has started, contact your instructor and ask them to unlock the assignment so you can remove the image.
- File submissions (like a PDF or Word document with an image inside) require you to delete the file and upload a corrected version before grading begins.
Removing a picture from a file submission
If you uploaded a document or image file to an assignment, you cannot edit the file directly in Canvas. Instead, you must delete the entire submission and upload a new file without the picture. Open the assignment, locate your submission, and look for a delete button or trash icon next to the file name. Click it to remove the file.
After deleting, upload the corrected version of the document. Make sure the new file does not contain the picture you wanted to remove. This method works for Word documents, PDFs, images, and any other file type. Your instructor will see only the new submission unless they have already downloaded or graded the original.
Deleting a picture from a discussion post
Discussion posts in Canvas can be edited after you post them, which means you can remove an embedded image. Click the three-dot menu or edit button next to your post, select "Edit," and then click the image to select it. Press Delete or Backspace to remove it, then save your changes.
Check your course syllabus or ask your instructor about the edit window — some courses allow edits for a set time (such as 24 hours), while others allow unlimited edits. If the edit window has closed, you will not be able to modify the post without instructor permission. If you need to remove the image after the window closes, contact your instructor and explain the situation.
Removing an image from a message or assignment comment
If you attached a picture to a message or comment within an assignment, click the message to open it and look for an edit option. Select edit, click the image, and delete it. Save your changes. Messages and comments usually have a longer edit window than discussion posts, but this varies by course settings.
If you cannot find an edit button, the message may be locked. Contact your instructor to ask if they can unlock it or remove the image for you.
What happens if your instructor has already started grading
Once your instructor opens your submission to grade it, Canvas locks the assignment and prevents you from making changes. If you realize the picture needs to be removed after grading has begun, send your instructor an email explaining the situation and ask them to unlock the assignment. Include the assignment name and a brief reason for the request.
Your instructor may unlock the assignment temporarily so you can delete the image, or they may remove it themselves. Response time depends on your instructor's schedule, so reach out as soon as you notice the problem. Do not assume the image will be ignored — it is better to ask than to hope.
Preventing accidental uploads in the future
Before submitting any assignment, review all files and embedded images to make sure nothing needs to be removed. Take a screenshot of your submission or open the file one more time to confirm what your instructor will see. This extra step takes 30 seconds and prevents the need to contact your instructor later.
If you are uploading a document with multiple images, consider creating a checklist of which images should be included. Label your files with dates or version numbers (such as "Essay_Final_v2.docx") so you know which version you are submitting.
Frequently Asked Questions
Can I remove a picture after my instructor has graded the assignment?
No, you cannot edit a submission after grading has begun without your instructor's permission. Contact your instructor and ask them to unlock the assignment if you need to make changes. They may or may not grant the request depending on course policy.
What if I deleted the wrong picture by mistake?
If you deleted a file submission, you can upload it again before your instructor grades the work. If you deleted an image from a discussion post or message, check whether Canvas keeps a version history — some courses do, some do not. Contact your instructor if you need help recovering the image.
Does my instructor see the original picture if I delete and resubmit?
Your instructor sees only the current submission unless they downloaded or saved the original file before you deleted it. Once you delete and resubmit, the new version replaces the old one in Canvas.
Can I edit a picture instead of deleting it?
Canvas does not have a built-in image editor. If you need to change a picture (crop it, blur part of it, or add text), edit the image in a photo editor on your computer, then delete the old file submission and upload the edited version.
What if the delete button is not showing up?
The delete option may be hidden if grading has already started or if your course has special submission settings. Try refreshing the page or logging out and back in. If the button still does not appear, contact your instructor or your school's Canvas support team.