Free Remove Duplicate Lines Tool
This remove duplicate lines tool helps you clean lists by removing repeated entries. Paste your text, choose whether matching should be case-sensitive, and generate a cleaner list with only unique lines.
It is useful for keyword lists, email lists, product lists, notes, exported data, sitemap checks, usernames and any text list that has somehow duplicated itself like it pays rent.
How To Use This Remove Duplicate Lines Tool
Paste your list into the text box, choose the duplicate matching mode, then click Remove Duplicates. The tool will keep the first version of each line and remove repeated entries.
Duplicate Line Cleaning Tips
If you are cleaning keyword lists or exported data, ignoring case is usually best. If uppercase and lowercase versions should count as different entries, choose case-sensitive mode.
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Remove Duplicate Lines FAQ
Does this keep the original order?
Yes. The tool keeps the first appearance of each unique line and removes later duplicates.
Does it delete blank lines?
Blank lines are ignored in the cleaned result. Use the remove empty lines tool if you only need to remove blank lines without checking duplicates.
Does this save my text?
No. The tool runs in your browser and does not upload or store your text.