Plagiarism Checker Lite

Sometimes you just want to know how similar two texts are. Did the intern reword the passage or only swap a few words? Is the revised version really new or largely the old one? The plagiarism checker Lite answers exactly this question without you uploading your texts to a foreign service.

The tool works with n-gram analysis. It breaks both texts into overlapping word sequences and looks at how many of them appear in both. From that comes a similarity percentage that makes the overlap tangible. Small rewordings show up because identical word chains become visible, no matter how the rest is rearranged.

The value alone would be half as useful, so the checker shows where the matches lie. In the highlight view the matching passages are colour-marked in both texts, so at a glance you see which parts were taken over and which are independent. You do not argue over an abstract percentage but over concrete sentences.

For a closer look there is the sentence analysis. It rates individual sentences by their similarity so the critical spots stand sorted at the top. This way you find the passages most likely to be problematic without having to compare the whole text yourself.

For more than two texts there is the matrix. It compares several texts against each other and shows the pairwise similarities in an overview - handy when you want to check a series of submissions, versions or text modules for duplication. The details section explains the metrics behind it.

Important and honest: this is a Lite tool for comparing texts you already have. It does not search the internet or any academic databases, so it cannot find a source you do not give it yourself. For the binding plagiarism check of a thesis you need the big services with billion-entry databases - this checker is the quick self-check beforehand.

Everything runs in your browser. Your texts never leave your device, there is no upload to a foreign server and no signup. That is precisely the advantage over the online services: you can compare confidential or unpublished texts too without handing them over.