How does this plagiarism checker work?
This tool compares two texts by breaking them into sentences and n-gram phrases, then calculating the overlap between them. It uses a combination of sentence-level matching and word-level Jaccard similarity to produce an overall similarity percentage. Matching phrases are highlighted so you can see exactly which parts of the texts overlap.
When to use this tool
Use this plagiarism checker to compare a student's essay against a source, check if rewritten content is sufficiently original, or verify that two documents don't share too much content. It is ideal for teachers, students, writers, and editors who need a quick side-by-side comparison.
Privacy first
All comparisons run locally in your browser using JavaScript. Your texts are never uploaded, stored, or shared with any server. Close the tab and your content is gone.