Canvas Quiz does not currently integrate with Turnitin for checking for plagiarism. As a workaround, we have developed the following method which may require some technical expertise.
Save the zip file to your local computer. Log in to Turnitin and upload it to a new assignment. Wait for Turnitin to produce its similarity report.
If you expect the students’ answers to be short answers, we suggest that you tell Turnitin NOT to ignore quotations, otherwise students may enclose their answers in quotations in order for them to be excluded from the similarity report.
Watch instructions on installing and uploading Canvas Quiz essay answers to Turnitin (02:41).