CopyChecker

Online plagiarism checker that shows similarity and unique-content percentages, highlights matched sentences, and lists matching sources.

CopyChecker: Early access, open to join. Get it at copychecker.com.

CopyChecker is a comprehensive, browser-based productivity suite designed to serve writers, students, educators, marketers, researchers, and business professionals. Built around a mission of democratizing access to world-class SEO and content tools, CopyChecker offers more than 20 powerful utilities — completely free and accessible from any device with an internet connection. Writing & Text Tools At its core, CopyChecker is a best-in-class Plagiarism Checker that scans billions of web pages.