You can use the to check papers without a class.
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You must properly know about the plagiarism and its types.
This feature allows you to instantly scan the document that you put in — might be your competitor blog post and tell the keyword density of various keywords.
Universities often pay for Turnitin to help cub plagiarism and maintain academic integrity as it prevents copy-pasting.
So, whenever you are working on any writing project you can easily detect the plagiarism content and its source through Turnitin plagiarism software.