Daya duplicate checking can be done five times a day for free, and the specific times may change according to the time, platform and activities. Please refer to the actual usage. A common duplicate checking tool is mainly used to detect whether there is plagiarism in text files such as papers, reports and homework. This tool can scan the full text and compare the similarities of text files, identify similar or identical contents with other documents or network resources, and generate detailed duplicate checking reports.

It should be noted that different duplicate checking systems have different databases and algorithms, so their duplicate checking results may be different from those of other mainstream duplicate checking systems such as HowNet, VIP and paperfree. At the same time, any duplicate checking system has a certain error rate, and even the duplicate checking of HowNet cannot completely guarantee the accuracy of the duplicate checking results.

It is suggested that free duplicate checking software such as paperfree and papertime can be used to check the first draft of the paper, and the duplicate checking system required by the school can be used to check the final draft to ensure that the paper meets the academic requirements.