Free Duplicate Sentence Finder Online
Identify duplicate and near-duplicate sentences within a document or between two texts. Use for proofreading, self-plagiarism detection, and content quality checks. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Paste Document Text
Enter the text to analyze for repeated sentences.
Optionally Add Comparison Text
Add a second text block to check for cross-document sentence duplication.
Set Similarity Threshold
Adjust sensitivity (100% = exact match, 70% = near-duplicate).
View Highlighted Duplicates
See duplicate sentences highlighted in both texts with similarity scores.
Frequently Asked Questions
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