Still safe. Paper duplication checking platforms generally do not leak papers, mainly those that are purely free. This kind of platform has no profit channel, but if it is to maintain its operation, it is likely that someone will sell papers. Therefore, it is best not to use this pure free duplicate checking platform.

Repeated examination of papers is essentially a comparison of your papers. The paper duplicate checking rule of HowNet is to repeat 14 characters continuously, even if it is repeated. If most students "borrow" from master's papers and periodical papers, then the repetition rate is not low, and they have to pay more attention to reducing the weight of papers.