Paste your text and the tool drops every repeat of a word after its first appearance, or only back-to-back doubles if you pick that mode. For example, 'the cat the dog the cat' becomes 'the cat dog': six words in, three out, three duplicates removed. Capitals are ignored unless you tick the case option.
Repeated words creep in from copy-paste, merged keyword lists and fast typing. This cleaner offers two jobs. Every repeat keeps the first time a word appears and drops each later copy, which suits tag lists, keyword sets and vocabulary lists. Back-to-back repeats only removes a word that immediately follows itself, the 'the the' typo, and leaves the rest of your prose intact. A table lists each repeated word with the number of copies dropped, and counts show words before and after. Line breaks are kept, but punctuation is not: the output is the words of each line joined by single spaces, so for formatted prose use the back-to-back mode and paste the fixes back by hand.
Type or paste into the box, or open a .txt, .md or .csv file from your device.
Choose Every repeat for word lists or Back-to-back repeats for doubled-word typos.
Tick the capitals option if Apple and apple should count as different words.
Copy the cleaned text and check the table to see which words were dropped.
Result Cleaned text: the cat dog
Words before: 6
Words after: 3
Duplicates removed: 3
Share removed: 50%
Two extra copies of the and one of cat are dropped, so six words become three.
Result Cleaned text: This is a test
Words before: 6
Words after: 4
Duplicates removed: 2
Share removed: 33.3%
Only words that repeat the one right before them are removed, the classic typo a proofreader catches.
Result Cleaned text: Apple pie
Words before: 4
Words after: 2
Duplicates removed: 2
Share removed: 50%
With capitals ignored, Apple, apple and APPLE are one word, and the first spelling is kept.
removed = words before − words after; share = removed ÷ words before × 100
words beforewords afterEach line is split into words by Unicode letter rules, so Arabic and accented words are handled. In Every repeat mode a word is kept the first time it is seen anywhere in the text and dropped afterwards. In Back-to-back mode a word is dropped only when it matches the previous word on the same line. Unless the capitals option is ticked, words are compared in lower case and the first spelling seen is the one kept.
Every repeat removes a word wherever it reappears after its first use, so 'red blue red' becomes 'red blue'. Back-to-back repeats removes a word only when it directly follows itself, so 'red red blue red' becomes 'red blue red'.
Yes. Each line is cleaned and kept on its own line. Lines left with no words, including blank lines, are dropped from the output.
The tool works on words, so commas, full stops and extra spaces are not carried over. Words inside each line are rejoined with single spaces. Apostrophes and hyphens inside a word, as in don't or well-known, stay.
By default yes: The and the count as the same word and the first spelling is kept. Tick the capitals option to treat them as different words.
No. Back-to-back mode compares words on the same line only, so a word ending one line and starting the next is left alone.
No. The cleaning runs in your browser and the text is not stored when you leave the page.
Using this tool in an assignment, article or report? Copy a citation, or a link for your website.
Tools Directory Editorial Team. (2026, October 19). Remove Duplicate Words. Tools Directory. Retrieved October 26, 2026, from https://tools.milunir.com/text-tools/cleanup-sorting-and-lists/remove-duplicate-words/
Tools Directory Editorial Team. “Remove Duplicate Words.” Tools Directory, 19 Oct. 2026, https://tools.milunir.com/text-tools/cleanup-sorting-and-lists/remove-duplicate-words/. Accessed 26 Oct. 2026.
Tools Directory Editorial Team. “Remove Duplicate Words.” Tools Directory. Last modified October 19, 2026. Accessed October 26, 2026. https://tools.milunir.com/text-tools/cleanup-sorting-and-lists/remove-duplicate-words/.
<a href="https://tools.milunir.com/text-tools/cleanup-sorting-and-lists/remove-duplicate-words/">Remove Duplicate Words – Tools Directory</a>