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Repeated Word Finder
Finds the same word twice in a row — including across a line break, where proofreading misses it — and labels pairs like "had had" that are ordinary English rather than errors. Separately shows which words you lean on most. Runs in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Doubled words
The same word twice in a row. Usually a typo, but not always — each one is labelled.
Most used words
Marked up
Doubled words in amber, your most-used word in blue.
Analysed in this page — nothing is uploaded, and no draft is stored. A doubled word is worth fixing; an overused word is a judgement call, and repetition is sometimes the point. This tool counts, it does not rewrite.
How to use it
- Paste your draft, or open a text file.
- Fix anything marked as a likely typo — those are real mistakes.
- Read the "often correct" ones rather than deleting them blindly.
- Scan the most-used list for a word you have leaned on without noticing.
Two problems, one name
The sample loaded above is 54 words with 30 distinct ones, and it contains both problems at once. Eight places have the same word twice in a row, but they are not eight mistakes:
the the likely typo
over over likely typo
and and likely typo
really really likely typo
was was likely typo
the / the likely typo — across a line break
had had often correct
that that often correct
Six are worth fixing and two want a human glance. Separately, "team" appears three times in those 54 words — a density of 5.6% for a single noun — which no spell checker will ever mention because nothing is misspelled. That is the second problem, and it is a judgement rather than a fix.
The line-break blind spot
One of those typos in the sample is deliberately split so that "the" ends one line and "the" begins the next. This is the doubled word that gets published. Proofreading is done line by line, and the eye treats the end of one line and the start of the next as separate units — so the duplication is simply not seen. Reflow the text at a different width and it becomes obvious, which is exactly why it survives right up until someone reads the printed version.
Because a machine does not read in lines, it catches these reliably. They get their own note for that reason.
Why false positives are the real problem
A doubled-word checker is only useful if you trust it. Flag "had had" as an error and the next warning gets dismissed unread, along with the genuine one after it. So three distinctions are made rather than one.
Punctuation between the two occurrences means they are separate uses, not a doubling — "the dog. Dog food" is fine. A short list of pairs that are ordinary English gets labelled rather than condemned. And words are tokenised so that internal apostrophes and hyphens hold together, which stops "the theatre" being reported as a doubled "the". Each of those was checked against a specific case before it shipped.
Reading the frequency list honestly
Common words are hidden by default because a list topped by "the" and "and" tells you nothing. The stop list is kept short on purpose, though: filter too aggressively and you hide genuine overuse of an ordinary word, which is precisely the thing worth catching.
Treat a high count as a question, not a verdict. In technical writing the same noun repeated is usually clearer than inventing synonyms for it — calling the same thing three names is worse than calling it one name three times. Repetition is also a deliberate rhetorical device. The count tells you where to look; whether it needs changing is yours to decide.
FAQ
Why are doubled words and overused words separated?
Because one is an error and the other is a decision. "the the" is a typo with a single correct fix. Using "team" three times in a paragraph might be careless, or might be the clearest way to write it — repetition is a legitimate device, and a tool that lumped both together would be nagging you about prose style in the same breath as reporting a mistake.
Why is "had had" not flagged as an error?
Because it is ordinary English: "she had had enough" is correct. The same goes for "that that", and for a few others. Those pairs are still shown so you can check them, but labelled as often correct rather than presented as mistakes. Flagging them as errors would train you to ignore the warnings, which defeats the point.
What about a repeat across a full stop?
That is reported separately and not called a typo. In "I walked the dog. Dog food is expensive" the word appears twice in a row but they are two different sentences doing two different jobs. Only whitespace between the two occurrences counts as a genuine doubling; any punctuation in between and it is treated as two separate uses.
Why highlight doubled words that span a line break?
Because those are the ones that survive proofreading. Reading line by line, the eye takes the last word of one line and the first of the next as belonging to different units, and skips straight over the duplication. It is the single most common doubled-word typo to make it into print, so it gets its own note.
What counts as one word?
Letters and numbers, with internal apostrophes and hyphens kept — so "it's" and "well-known" are each a single word, and "the theatre" is correctly two words rather than a doubled "the". Comparison ignores case, so "The the" is caught.
Is my writing uploaded or stored?
No. Everything happens in the page, and nothing is saved between visits. This is a counting tool — it does not rewrite your text, and it does not send your draft anywhere.
How we compare
| Feature | Online Tool Store | Word processor spell check | Writing assistants |
|---|---|---|---|
| Draft never leaves your device | ✓ | ✓ | ✗ |
| Catches doubles across a line break | ✓ | Usually | ✓ |
| Labels legitimate doubles instead of flagging them | ✓ | ✗ | Sometimes |
| Shows word frequency and density | ✓ | ✗ | Some do |
| No account, no sign-up | ✓ | ✓ | ✗ |
| Suggests rewrites | ✗ | Limited | ✓ |
| Grammar and spelling | ✗ | ✓ | ✓ |
A focused last pass before publishing, on text you would rather not paste into a service. It will not check your grammar or rewrite a sentence — use a spell checker for the first and your own judgement for the second. What it does is catch the duplication your eye slides over, and show you which word you have been overusing.