Duplicate Word Remover
Remove duplicate words from text instantly while preserving the first occurrence order. Use this duplicate word remover for keyword lists, drafts, and quick text cleanup.
Whether you call it duplicate word remover or remove duplicate words, this free tool handles it instantly in your browser.
Options
Example usage
Example input
apple banana apple orange banana
Example output
apple banana orange
Batch Processing
Enter multiple inputs, one per line. Each line will be processed separately.
Why this tool?
Everything runs right in your browser — no uploads, no sign-up, no waiting. Your text never leaves your device.
Quick tips
- •Outputs update live as you type.
- •Use the sticky copy button to grab results quickly.
- •Bookmark this page for fast access.
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How it works
- Paste or type the repeated text into the input area.
- The tool keeps the first appearance of each word and removes later duplicates.
- Use the case-sensitive option if you want uppercase and lowercase words treated as different entries.
Use cases
Repeated words, and where they hide
Duplicate words show up in two very different situations. The first is accidental repetition in prose — the classic "the the" that survives every proofread because readers see what they expect rather than what is on the page. Psycholinguists have studied this for decades; the effect is strong enough that duplicated words routinely reach print.
The second is data: keyword lists merged from two sources, tag fields that accepted the same value twice, and brainstorming dumps where the same idea got typed by three people. Here the duplicates are not errors of attention but of merging, and there can be hundreds.
Words vs. lines — pick the right tool
This tool works at the word level: it keeps the first occurrence of each word and removes later repeats, which is what you want for keyword and tag lists where each item is a single word. If your data has one item per line and those items are phrases — email addresses, names, product titles — you want Remove Duplicate Lines instead, which compares whole lines.
Case sensitivity is the setting that matters most. For keywords and tags, leave it off so "SEO" and "seo" collapse into one entry. Turn it on when capitalization is meaningful — a list of acronyms alongside ordinary words, for example, where "IT" and "it" are genuinely different terms and merging them would corrupt your data.
Cleanup
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FAQ
Does it keep the original word order?
Yes. The tool preserves the first appearance of each word and removes later repeats.
Can uppercase and lowercase be treated differently?
Yes. Turn on case-sensitive mode if you want words like Apple and apple to count as separate entries.
Is this good for keyword cleanup?
Yes. It is especially useful for simple duplicate keyword removal before sorting or grouping a list.