Free Tool

Free Duplicate Line Remover

Remove duplicate lines from a list, log, or block of text in one click.
Free, private, no upload to a server. Everything happens in your browser.

All processing happens 100% in your browser — your text is never uploaded anywhere.

Text (one item per line)
When duplicates are found, keep the…

Paste some text above to see duplicate stats.

Deduplicated result
Everything You Need to Clean Up Lists
One-Click Dedupe
Remove every duplicate line the moment you paste your text.
Case-Sensitive Option
Treat "Apple" and "apple" as the same line, or keep them distinct.
Whitespace Trimming
Ignore leading/trailing spaces so near-identical lines still match.
Keep First or Last
Choose which occurrence of each duplicate survives the cleanup.
Instant Summary
See exactly how many duplicate lines were removed out of the total.
100% Private
Nothing you type is ever sent anywhere — it all happens in your browser.
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Whitespace Cleaner
Trim, collapse, and tidy up messy whitespace in any text.
Built by Perry — tools I needed, free for anyone who wants them.