Text Similarity
Compares two texts at the phrase level and returns a similarity score. Use it to clear a duplicate-content suspicion, or to see whether two service pages read too much alike.
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What does this tool look at?
Tools that measure whether your copy answers the search behind the query: density, readability, heading length and keyword research.
- Similarity at both word and phrase level
- The phrases that appear verbatim in both texts
- The words that appear in only one of them
What this tool measures
Duplicate content is not a penalty, it is a selection problem. If you have two pages that read alike, a search engine will not show both: it picks one and suppresses the other. The choice is not yours, and the page you expected rarely wins.
The tool compares two texts at two levels. First at the word level: how much the meaningful vocabulary of the two overlaps. Second at the phrase level: whether three-word sequences repeat verbatim. Phrase similarity is the decisive one because it separates “same topic, different wording” from copy and paste.
The overall score is a weighted sum of the two, with phrase similarity carrying more weight. The result also lists the phrases appearing verbatim in both texts and the distinctive words that appear in only one.
How to use it
- 1
Paste both texts
Each needs at least 10 words. Compare two of your own pages, or your page against a competitor's.
- 2
Look at the overall similarity
Under 30% is safe, 30-60% means template sentences have taken over, above 60% is a real problem.
- 3
Read the shared phrase list
It shows exactly what was copied, usually the opening sentences and the service descriptions.
- 4
Build new copy from the distinctive words
The words appearing in only one text carry that page's real difference. That is where to widen the gap.
When to use it
- To see whether your location pages for the same service are copies of each other.
- When product descriptions come from the manufacturer, to check whether you publish the same text as competitors.
- When two blog posts overlap, to decide which one to merge and which to redirect.
- To confirm a rewrite genuinely differs from the version it replaced.
Reading the result
Similarity above 60%
The two pages are near-identical. Either redirect one into the other, or actually write down what makes them different.
Similarity between 30% and 60%
The template has swollen. If every page opens and closes with the same paragraphs, the real difference disappears.
More than twenty shared phrases
Sentences were copied. Three-word sequences do not overlap this much by chance.
Few distinctive words
Both texts draw from the same pool of vocabulary. Examples, figures, names and local detail pull them apart.
Similarity below 30%
The texts are different enough. Covering the same topic differently is fine, and worth linking between.
Questions about the Text Similarity
Google says plainly that there is no such penalty. What happens is filtering: one of the similar pages is chosen and the others are left out of the results. The outcome feels like a penalty, but the mechanism differs and so does the fix.
You can, but each page needs its own content: the team in that city, references, how to reach you, local pricing or regulatory differences. Pages where only the city name changes are worthless to the reader and suppress each other.
In this tool, under 30% is treated as safe. Template, navigation and footer text create a baseline similarity on their own. What matters is the body copy; pasting the two body texts separately gives you a cleaner reading.
No. It does not search the web; it only compares the two texts you give it. To find out whether a text was copied from somewhere else, you need a dedicated plagiarism service.
Use it alongside these
The other tools in the same category. Run them together and you see the whole picture.
The tool found the problem. Now for the fix
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