About The Text Deduplicator

This free online Text Deduplicator removes repeated lines or words from pasted text directly in your browser. It is useful for cleaning keyword lists, IDs, tags, domains, exported rows, notes, and other plain-text lists before review or import.

You can deduplicate by line or word, trim entries, compare case-insensitively, keep the first or last occurrence, drop blank entries, and sort the cleaned output.

How to Deduplicate Text

1. Paste your list or text into Input text.
2. Choose whether to deduplicate by Lines or Words.
3. Select sorting and matching options.
4. Click Deduplicate.
5. Review the cleaned output and duplicate details before copying.

Choosing Options Correctly

Trim entries:
Remove leading and trailing spaces before comparing entries. This is usually best for copied lists.

Case insensitive:
Treat values such as Alpha and alpha as duplicates.

Keep last occurrence:
Use the last version of a repeated entry instead of the first.

Drop empty entries:
Remove blank lines or blank word entries from the output.

Quick FAQ

Is my text uploaded?
No. Deduplication is designed to run in the browser.

Does word mode preserve punctuation?
Word-based deduplication may tokenize text and change spacing or punctuation context. Use line mode when exact entries matter.

Why do similar entries both remain?
Different casing, spaces, punctuation, accents, or hidden characters can make entries distinct unless normalized first.

Can I sort the result?
Use the sort option if available, but remember sorting changes the original order.