Get similarity results in seconds with detailed phrase-level matching
Uses bigram and trigram analysis for accurate similarity detection
Identifies matching 3+ word phrases between both texts
All processing in your browser. No text is uploaded or stored anywhere
Paste your original text in the left box and the text you want to compare in the right box. Click "Check for Plagiarism" and the tool will analyze both texts using n-gram analysis, identifying matching phrases and calculating an overall similarity percentage.
The tool compares two texts using n-gram analysis (bigrams and trigrams) and word-level overlap. It identifies matching phrases of 3+ words and calculates a weighted similarity score. Everything runs in your browser — no text is sent to any server.
Yes, completely free with no signup required. There are no word limits or daily usage caps. Use it as many times as you need.
This tool compares two texts you provide against each other. It does not search the internet or any database. It is ideal for comparing drafts, checking if content has been copied between documents, or verifying originality between two sources.
The similarity score is a weighted combination of word overlap, bigram (2-word) matches, and trigram (3-word) matches. Under 15% is considered low similarity, 15-40% moderate, 40-70% high, and above 70% very high similarity.
No. All processing happens entirely in your browser using JavaScript. Your text never leaves your device — nothing is uploaded, stored, or shared with anyone.
The tool uses n-gram analysis which is effective at detecting copied or closely paraphrased phrases. It may not catch heavily paraphrased or restructured content. For comprehensive plagiarism checking against published sources, consider pairing this with a database-backed tool.
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