OverlapSign inFor instructors
Spot copied work before you grade it.
Upload Word, PDF and Jupyter submissions as they arrive. Overlap compares each new file with every earlier one and shows suspicious pairs side by side.
New accounts are reviewed and approved by the administrator.
Everything you need to review a stack of submissions
Word, PDF & Jupyter
Drop in .docx, .pdf and .ipynb files. Text and code are read right in your browser.
Upload as they arrive
Add submissions over days or weeks. Every new file is checked against all earlier ones.
Side-by-side review
Open any flagged pair and see both documents next to each other with matching passages highlighted.
Organized by class
Keep assignments sorted by class, semester and CRN, with a trash you can restore from.
Group work aware
Similarity scores help you tell shared group effort from copied work — you make the final call.
Private by design
Invitation-only accounts. Each teacher sees only their own assignments and students.
How it works
- 1Create an assignment
Name it and tag it with class, semester and CRN.
- 2Upload as they come in
Add each student's file whenever it arrives.
- 3Review the flags
Compare suspicious pairs side by side and decide.