Sizes
The Supported file types link beside any upload box shows the same list.
The rules that aren’t sizes
- A batch scan must be a single PDF. The dialog says so if you add anything else: “A batch scan must be a single PDF”.
- One assignment can’t mix documents with video or audio. “Upload either documents or video/audio, not both — they can’t be graded together in one assignment.”
- Video and audio assignments accept media only. A document dropped into one is refused: “This is a video assignment — only video & audio files can be graded.”
- Presentations and art assignments take documents and images, not media.
What a student sees when a file is refused
Students get the same size messages you do, worded for the file they chose, such as “Each file must be under 100 MB.” They never see a reason to do with your plan or limit; if work can’t be accepted for that reason, the student is told to contact their teacher and try later.Scanning advice
- A PDF from a scanner beats a photo from a phone. Text the scanner recognised is read directly; a photo has to be read as an image.
- Scan at a normal resolution, not the maximum. A 30-page stack at 600 dpi can pass 250 MB; at 200 dpi it won’t.
- Scan pages flat and the right way up. A crooked or shadowed page is the most common reason a handout comes back with no questions found.
- Remove password protection before uploading. A locked file can’t be read at all.
What to read next
Split one scan into many submissions
One PDF for the whole class.
Turn in your work
The student version of this page, written for them.
Last updated 19 September 2026