Remove Duplicate Lines
Delete repeated lines from lists, emails or keywords and sort what's left.
- Free, no sign-up
- Files stay on your device
- Works offline
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How to use the Remove Duplicate Lines
- 1
Paste your list into the input box — one item per line.
- 2
Choose whether matching is case-sensitive and whether to trim spaces or drop empty lines.
- 3
Optionally sort the result A–Z or Z–A.
- 4
Copy the cleaned list from the output box.
Frequently asked questions
Everything you need to know about the Remove Duplicate Lines.
Which copy of a duplicate is kept?
The first occurrence is kept and later repeats are removed, so the original order of your list is preserved unless you choose to sort it.
What does case-sensitive mean here?
With case-sensitive on, “Apple” and “apple” are treated as different lines. Turn it off to treat them as duplicates.
Is there a limit on list size?
No fixed limit. Lists with hundreds of thousands of lines are processed instantly in your browser.
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