Compare two texts for plagiarism
Paste your original and the text you think copied it. Every passage they share is highlighted in both, with the share of the text that was copied.
Text you paste or open is compared in your browser and never uploaded.- 1Add both texts
- 2See what's shared
- 3Use the evidence
How to compare two texts for plagiarism
To compare two texts for plagiarism, paste your original in the first box and the text you want to check in the second, or open a .txt or Word file in each. The tool highlights every passage of six or more words that appears in both, ignoring case, punctuation and spacing, and shows what share of the second text matches the first. You can also fetch a web page by its address, which helps when someone copied your website or blog post.
How the comparison works
Both texts are split into words, ignoring capital letters, punctuation, curly or straight quotes and extra spaces. The tool looks for every run of six or more words that appears in both, then stretches each match as long as the words keep agreeing. The longest passages are counted first, and no word is counted twice.
The result shows:
- The share of the second text that appears word for word in the first. That's the main number, because it answers "how much of this was copied from mine?"
- Each shared passage, highlighted in both texts with the same number and color. Tap one to jump to its twin.
- The longest shared passages, listed in order. A single long passage copied word for word says more than a scattering of common phrases.
Everything you paste is compared in your browser. Use Copy summary to keep a plain-text record, or Write a takedown notice to turn it into a DMCA takedown notice with the details filled in.
When someone copied your website
Use Use a web address under each box to fetch your page and the copy. It works on most ordinary pages, but not on pages that only show their text after loading scripts, or that block automated requests. In those cases, open the page, select the text, and paste it.
Save a screenshot of the copy with its address and date before you contact anyone, then see how to report copyright infringement for where to send your notice. If images were copied too, compare two photos does the same check for pictures.
What it won't catch
This check finds copied wording, not copied ideas. A text that was reworded sentence by sentence, translated, or rewritten with an AI tool can score low and still be plagiarised. Read the two side by side, and use the score as a starting point.
This page explains how things usually work, in plain words. It’s general information, not legal advice, and rules differ by country. For a decision that matters, talk to a lawyer. Terms
Questions, answered
Can I download the result as a report?
Yes. Download report (PDF) saves the share of copied text, the longest shared passages, and a SHA-256 fingerprint of each file, with the date and time. It's made on your device, so nothing is uploaded. Keep it with your original files for a takedown notice.
Does it catch reworded or paraphrased text?
No. It finds wording that was copied, even with changed punctuation, capital letters or spacing, and passages moved to a different order. Text that was reworded, translated or run through an AI rewriter needs a person to read both side by side.
Is my text uploaded?
No. Text you paste or open is compared in your browser and stays on your device. If you use a web address instead, our server fetches that public page and sends its text back to your browser, and nothing is kept.
Can I compare two Word documents?
Yes. Click Open a file under each box and choose a .docx file, or drop it onto the box. The text is read in your browser. For a PDF, open it, copy the text and paste it in.
How do I check if someone copied my website?
Click Use a web address under each box and enter your page and the page you think copied it. The tool fetches both and highlights the shared passages. Menus and footers come along too, so delete anything that isn't the main text for a cleaner score.
What percentage counts as plagiarism?
There's no fixed number. A few shared phrases can be coincidence or a fair quote, while one long passage copied word for word usually isn't. Look at the longest shared passages, not just the percentage.
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