Duplicate Word Remover

About Duplicate Word Remover

Accidentally typing the the same word twice in a row is one of the most common small proofreading errors in writing — it happens easily while editing (moving a sentence around and leaving a leftover duplicate word behind), while typing quickly, or when autocomplete and voice dictation occasionally repeat a word. It's also a surprisingly easy mistake to miss when proofreading your own writing, since your brain tends to read past a doubled word without consciously registering the repetition, the same way you likely read past "the the" at the start of this very paragraph.

This tool specifically finds and removes adjacent, back-to-back duplicate words — not just any word that happens to repeat somewhere else in your text (which would be normal, expected repetition in any real writing, like using "the" many times throughout a paragraph), but specifically consecutive repeats like "the the", "is is", or "very very" sitting right next to each other, which is virtually always an accidental typo rather than intentional writing.

The "case-insensitive" option (on by default) catches a specific pattern that's easy to otherwise miss: a duplicate where the first occurrence starts a sentence and is capitalized, while the accidental repeat isn't — like "The the report is ready" — which reads identically to a straightforward lowercase duplicate but wouldn't be caught by a simple exact-match comparison. With this option on, capitalization differences between the two repeated words don't prevent the duplicate from being detected and removed.

When a duplicate is removed, the tool keeps the first occurrence (preserving whatever capitalization it had) and removes the second, and reports exactly how many repeated words were found and removed — useful confirmation when proofreading a longer document where you want to know something was actually caught, not just visually scan the result hoping you didn't miss anything.

How it works

1. Paste your text. Drop in a paragraph, essay, or document you want to proofread.
2. Adjacent duplicates are found automatically. Words repeated back-to-back, like "the the", are detected instantly.
3. Copy the corrected text. The cleaned version, with a count of removed duplicates, is ready to copy.