Text Similarity Checker
Paste two passages to see how similar they are, with cosine and Jaccard scores plus shared and unique words. Useful for spotting duplicate content — all computed in your browser.
- Cosine similarity
- 55%
- Jaccard similarity
- 60%
- Shared words
- 6
Shared: quick, brown, fox, over, lazy, dog
How to use Text Similarity Checker
Compare two texts for similarity online. Get a percentage match using cosine and Jaccard similarity to detect duplicate or near-duplicate content.
- Open Text Similarity Checker using the tool above — no sign-up needed
- Enter your data or upload a file (processed entirely in your browser)
- Click the action button and get your result instantly
- Copy to clipboard or download your result
Your data never leaves your device — 100% private processing.
Frequently Asked Questions
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Why use Text Similarity Checker?
- Runs entirely in your browser — no data leaves your device
- Free to use with no account or sign-up required
- Instant results with no waiting or processing queues
- Works on any device: desktop, tablet, or mobile
Common use cases
- Save time on repetitive manual tasks
- Get accurate results without needing specialist software
- Share results directly from the output section
- Use as part of a professional or personal workflow
- Accessible anywhere with an internet connection
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