Duplicate Word Finder
Find repeated words in your text — highlight accidental doubles like "the the", or list every word that appears more than once. It all runs in your browser, so nothing you paste is uploaded.
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Why This Tool Matters
Doubled words are the typo your eyes skip. When you read your own writing, your brain fills in what it expects, so "we should send the the report" sails through three proofreads. A line break makes it worse: a word ending one line and starting the next is nearly invisible. Pasting a cover letter, a thesis chapter, or a customer email here highlights every back-to-back repeat in a second, before someone else spots it.
The second mode is for style rather than typos. Switch to all repeated words and a blog post can reveal that "important" shows up nine times in two paragraphs, or an essay can show an overused verb. Turn on ignore common words so "the" and "and" don't drown out the repeats that matter.
How to Use
- 01
Paste your text
Drop in a draft, email, or essay — repeated words are highlighted as you type.
- 02
Choose a mode
Use "Repeated back-to-back" to catch typos like "the the", or "All repeated words" to see every word that appears more than once.
- 03
Review and fix
Check the highlighted matches and the list of duplicates with counts, then correct them in your own document.
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Frequently Asked Questions
What counts as a duplicate word?
In "Repeated back-to-back" mode, a duplicate is the same word twice in a row with only spaces or line breaks between them, like "is is" or "the\nthe". A period, comma, or other punctuation in between breaks the pair, so "Stop. Stop." is not flagged. In "All repeated words" mode, any word that appears more than once anywhere in the text is highlighted.
Is "The the" treated as a repeat?
Yes, by default. Case-insensitive matching is on, so a sentence that begins with "The" followed by "the" is caught. Turn it off if you only want exact matches, such as when capitalization carries meaning.
Are some doubled words legitimate?
Occasionally. "I had had enough" and "that that is true" are grammatically correct, and so are names like "Bora Bora". The tool flags every back-to-back repeat so you can decide; it can't tell a typo from an intentional repeat.
Is my text sent to a server?
No. The search runs entirely in your browser with JavaScript. Nothing you paste is uploaded, logged, or stored, so it is safe for drafts and confidential documents.