How does the plagiarism checker work?

The tool compares two texts using three algorithms: Jaccard similarity (word set overlap), cosine similarity (TF-IDF vector comparison), and n-gram overlap (shared 3-word and 5-word phrases). The overall score is a weighted average of all three methods.

Is my text safe and private?

Yes, completely. Both texts are processed entirely in your browser using JavaScript. Nothing is sent to any server — your content stays 100% private on your device.

Can this replace professional plagiarism checkers?

This tool compares two specific texts you provide. Professional tools like Turnitin compare against massive databases of published work. Use this for quick self-checks between two known documents, and professional tools for comprehensive plagiarism screening.

What do the similarity colors mean?

Green (0-30%) means low similarity and likely original content. Yellow (31-60%) indicates moderate similarity that should be reviewed. Red (61-100%) signals high similarity with significant text overlap between the two passages.

Plagiarism Checker - Free Online Text Similarity Comparison Tool

Plagiarism Checker का उपयोग कैसे करें

1
Paste your original/source text in the left text area.
2
Paste the text you want to check in the right text area.
3
Click the "Compare" button to run the analysis.
4
Review the overall similarity score and color-coded verdict.
5
Explore Sentence Matching, N-gram Analysis, and Word Frequency tabs for detailed insights.
6
Click "Copy Report" to save the full analysis to your clipboard.

Plagiarism Checker के बारे में

Compare two texts for plagiarism and similarity using three powerful algorithms — all running 100% in your browser with complete privacy.

Key Features

3 Algorithms: Jaccard index (word overlap), cosine similarity with TF-IDF vectors, and n-gram overlap (3-word and 5-word phrases).
Color-Coded Sentences: Each sentence individually scored — green (unique), yellow (somewhat similar), red (near-identical).
Verdict: Overall score with clear classification — Low (likely original), Moderate (review needed), or High (significant overlap).
Deep Analysis Tabs: Sentence matching pairs, n-gram analysis of shared phrases, and word frequency comparison charts.
No Limits: Unlimited comparisons, no signup, no data collection.

Who Is This For?

Perfect for students checking essays, writers verifying originality, teachers reviewing submissions, and researchers comparing drafts between two known documents.

Privacy & Security

Your texts never leave your device — everything computed client-side with zero server calls.

Plagiarism Checker