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Check a text for plagiarism

Spot identical passages between your text and a source you provide, or search the web for sources.

The result shows without an account. To copy it, download it or keep it in Ydeora, a free account is enough. Create my free account

Your text is neither published nor stored. In web search, only a few sentences are sent to the search engine.

How it works

1Paste the text to check.
2Compare it with a specific source (text or link), or run the web search when available.
3Review the highlighted shared passages, the similarity rate and the sources.

The comparison detects verbatim reuse (at least 8 identical words in a row); deep rephrasing is not detected.
The web search queries a search engine with the most distinctive sentences: its coverage is limited to indexed, accessible pages. An empty result doesn't prove originality.
The similarity rate is a comparison indicator, not proof of plagiarism: a properly attributed quote is legitimate.

Make sure an article delivered by a writer doesn't copy an existing page.

Spot passages too close to a source to rephrase or quote them.

Measure what two texts have in common.

How does the comparison work?

Both texts are normalized, then compared by word sequences. Every passage of at least 8 words found identically is highlighted.

Can I compare with a web page?

Yes: paste the page link as the source, Ydeora fetches its text and compares it with yours.

Is my text indexed anywhere?

No. It is neither published nor stored; in web search, only a few sentences are sent to the search engine.

Fix mistakes, clarify, shorten or rephrase a text while keeping its meaning.

Words, characters, sentences, reading time and the limits of X, LinkedIn, Instagram and Threads.

Summary, key points, structured notes or action items from a text or a transcript.

The Ydeora editor saves your texts automatically, with tables, colors, task lists and link sharing.