Duplicate Content Checker

Free online tool to check text for plagiarism and duplicate content with accurate similarity detection

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About This Tool

This free online plagiarism checker analyzes your text against multiple sources to detect duplicate content and potential plagiarism. Simply paste your text or upload a document, and our tool will scan for similarities, highlight matching sections, and provide a detailed similarity percentage. Perfect for students, writers, bloggers, and content creators who need to ensure originality in their work.

Save your calculation history with a free account

How to Use

Paste your text into the text area or upload a document (TXT, DOC, DOCX, PDF)
Adjust sensitivity settings if needed (minimum match length, similarity threshold)
Click 'Check for Plagiarism' to analyze your content
View the results showing similarity percentage and highlighted matching sections
Review detailed analysis of potential duplicate content

Frequently Asked Questions

Find Quick Answers

Is this plagiarism checker really free?

Yes, this is a completely free tool with no hidden costs or subscription requirements. You can check unlimited text without any charges.

What types of documents can I upload?

You can upload TXT, DOC, DOCX, and PDF files. The tool extracts text from these formats for plagiarism analysis.

How accurate is the plagiarism detection?

Our tool uses advanced text comparison algorithms to detect similarities with high accuracy. It identifies matching phrases, sentences, and paragraphs across multiple sources.

Does the tool store or share my content?

No, your content is processed in real-time and not stored on our servers. All analysis happens during your session and is not saved.

What similarity percentage indicates plagiarism?

Generally, similarity above 15-20% may indicate potential plagiarism, but this depends on context. Our tool highlights all matches so you can review them individually.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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