🧹Duplicate Line Remover

Remove duplicate lines from text and keep only unique entries.

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Case-insensitive comparisonTrim whitespace

About Duplicate Line Remover

Remove duplicate lines from any list or block of text, keeping only the first occurrence of each unique line. Supports case-sensitive and case-insensitive matching, and optionally trims whitespace before comparing lines.

How to Use Duplicate Line Remover

1
Paste your text
Enter the list or text block containing duplicate lines.
2
Configure options
Choose case sensitivity and whether to trim whitespace or remove blank lines.
3
Copy unique lines
Copy the deduplicated output ready for use.

Common Use Cases

Deduplicating email lists or subscriber exports
Cleaning up scraped data with repeated entries
Removing repeated lines from log files
Preparing unique keyword lists for SEO or advertising

Frequently Asked Questions

Is the comparison case-sensitive?

By default yes, but you can enable case-insensitive mode so that 'Apple' and 'apple' are treated as the same line.

Does it remove blank lines too?

There is an option to remove blank lines along with duplicates, helping you clean up sparse text in one step.

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