This guide walks you through using Plagiarism Checker effectively. Check text for plagiarism, duplicate content, and AI-generated writing. Get an originality score with highlighted matches and AI detection analysis. 100% browser-based  your text never leaves your device. All processing happens in your browser — your data never leaves your device.
Copy your content and paste it into the text area, or upload a .txt file. The tool accepts up to 50,000 characters.
Click Check Plagiarism. The tool analyzes your text for internal repetition, n-gram overlaps, and AI-generation patterns.
See your originality percentage, highlighted duplicate sections, AI likelihood score, and a detailed breakdown of repeated phrases and suspicious patterns.
Check blog posts and articles for unintentional duplicate content before publishing
Detect AI-generated text in student submissions and freelance work
Review internal documentation for consistency and avoid repetitive phrasing
Yes, Plagiarism Checker is completely free with no sign-up required, no usage limits, and no hidden fees.
No. All processing happens locally in your browser. Your data never leaves your computer.
Plagiarism Checker
Check text for plagiarism, duplicate content, and AI-generated writing. Get an originality score with highlighted matches and AI detection analysis. 100% browser-based  your text never leaves your device.
Best Practices for Plagiarism Checker
Follow these best practices to get the most out of Plagiarism Checker. Check text for plagiarism, duplicate content, and AI-generated writing. Get an originality score with highlighted matches and AI detection analysis. 100% browser-based  your text never leaves your device. These tips will help you work more efficiently and avoid common pitfalls.
Common Mistakes in Plagiarism Checker
Learn about common mistakes when using Plagiarism Checker and how to avoid them. Check text for plagiarism, duplicate content, and AI-generated writing. Get an originality score with highlighted matches and AI detection analysis. 100% browser-based  your text never leaves your device. Understanding these pitfalls will help you use the tool more effectively.