The website with the strictest duplicate checking may be HowNet. HowNet enjoys a high reputation in the industry, with a wide range of duplicate checking and authoritative results, and is the first choice of many schools. HowNet's database is very huge, and a comprehensive comparison of all the resource libraries can intelligently interpret the contents of the literature.

In addition, the HowNet duplicate checking system can directly display the comparison results in the report, which is widely used. For example, if there are strict requirements on the repetition rate of master's degree, doctor's degree, professional title and other papers, this detection system is needed for detection. However, the cost of HowNet is relatively high, and generally only schools or institutions can afford it.

In addition, VIP, Wanfang and other websites have a high level of duplicate checking and relatively low cost, which is a tool for students to choose.

Generally speaking, the choice of duplicate checking tools depends on the specific situation, and schools or institutions generally choose strict duplicate checking tools such as HowNet to ensure the quality and academic integrity of papers.