Sort & Remove Duplicates
Last updated: 2026 · Free online tool
What is Sort & Remove Duplicates?
Free online tool to sort lines and remove duplicates
How to Use
- 1 Enter text — Paste the text you want to sort or deduplicate into the left input area.
- 2 Set options — Select desired options such as sort direction, deduplication, case sensitivity, and empty line removal.
- 3 Process — Click the process button and the results will appear on the right.
- 4 Check results — Review line count changes and removed duplicates/empty lines statistics, then copy the result with the copy button.
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Frequently Asked Questions
Natural sort compares numbers as numeric values rather than characters. Regular sort gives 'file1, file10, file2', but natural sort gives 'file1, file2, file10'.
The first occurrence is kept. If both 'Apple' and 'apple' exist, the first one ('Apple') is retained.
If 'remove empty lines' is enabled, the result will be an empty string. If disabled, empty lines are preserved, and deduplication will keep only one.
Yes, the 'trim whitespace' option removes all whitespace characters including spaces and tabs from the beginning and end of each line.
Tens of thousands of lines can be processed within browser memory limits. Performance may slow down beyond 100,000 lines.