Free Line Sorting & Duplicate Remover Tool Online
Sort text lines alphabetically, remove duplicate entries, and trim whitespace in seconds. Perfect for cleaning lists, logs, and text files.
IN: List of lines · OUT: Cleaned & sorted lines · RUNS: 100% in your browser
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Frequently asked questions
How does duplicate detection work?+
By default it treats lines as duplicates only if they match exactly (case-insensitively unless you enable 'Case sensitive'), keeping the first occurrence of each unique line and removing later repeats.
What does 'trim whitespace & blank lines' do?+
It removes leading/trailing spaces from each line and drops any completely empty lines, which is useful for cleaning up pasted lists that have inconsistent spacing.
Can I sort without removing duplicates?+
Yes, uncheck 'Remove duplicates' and choose A→Z or Z→A sorting — the two operations work independently so you can use either, both, or neither.
What sorting order is used?+
Lines are sorted using standard locale-aware string comparison, which generally matches alphabetical order you'd expect, including sensible handling of numbers and accented characters.
Can this process very large lists?+
Yes, it comfortably handles lists of many thousands of lines since all operations run as simple in-memory JavaScript array operations.
Is my list of lines sent to a server?+
No, all processing happens entirely in your browser as you type or paste — nothing is uploaded.