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  1. Home
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  3. On-Page SEO
  4. Duplicate Text Checker
Free Tool

Duplicate Text Checker

Compare two drafts and estimate duplication risk instantly.

Similarity score
Phrase analysis
Instant comparison

Similarity

Overall duplication score combining word and phrase overlap.

Word Overlap

Percentage of shared unique words between texts.

Phrase Overlap

Percentage of shared 3-word phrases (shingles).

Why Duplicate Content Matters

Duplicate content can dilute rankings and create internal competition. Keep similarity under 50% for safety.

<50%Safe
50-80%Warning
>80%Risk

Frequently Asked Questions

How is similarity calculated?

Using Jaccard similarity on both individual words and 3-word phrases (shingles).

What should I do if similarity is high?

Rewrite sections with unique angles, add new data, or change the structure.

Live analysisNo data storedInstant results