Duplicate Word Finder
Find accidentally repeated words, like "the the", left over from editing or copy-pasting.
Catches the specific typo of a word appearing twice in a row ("the the", "is is") — a common slip from editing a sentence and forgetting to delete the old word, or from a copy-paste that duplicated a fragment. It's not a general repeated-word checker, since most words legitimately appear many times across a normal paragraph.
Example: A sentence reading "I think that that is correct" flags the repeated "that that" — a common leftover from editing a sentence and forgetting to delete the old word.
How it works
- Paste your text
- Immediately-repeated words are flagged and removed in the output
- Copy the cleaned result, or check the flagged list first
Frequently asked questions
Does this catch a word repeated elsewhere in the text, not right next to itself?
No — only immediately-adjacent repeats ("the the") are flagged, since a word appearing multiple times across a paragraph is completely normal English, not a typo.
Is my text uploaded anywhere?
No — Duplicate Word Finder runs entirely in your browser using JavaScript/WebAssembly. Your text is never sent to a server.
Does this flag similar words, like \"there\" next to \"their\", or only identical repeats?
Only exact, case-insensitive repeats of the same word immediately next to each other — a different but similar-looking word isn't flagged, since that's a separate kind of mistake, a homophone confusion, not a duplication.