At present, there are many free paper duplicate checking systems, but many of them need to do tasks to change the number of repeated words, and few of them really do duplicate checking for free. I've compiled some, which I hope will be useful to you:

Paperge is a real free duplicate check, and there is no need to do any tasks. Everyone has a chance to check the weight for free every day. Recently, an activity was launched to view all versions at111-11:22 every day.

Even if paperge checks the weight for free, its accuracy and safety can be guaranteed. This is definitely the gospel of student bonus hunter! Moreover, it can be used on both mobile phones and computers, and the operation is very convenient.