Duplicate Line Remover
Remove duplicate lines from text
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How to Use Duplicate Line Remover
- 1Paste your text with duplicate lines into the input area.
- 2Toggle options: trim whitespace, case-insensitive matching, sort output.
- 3Click Remove Duplicates to process.
- 4See how many duplicates were removed and copy the clean result.
About Duplicate Line Remover
Remove duplicate lines from text online with options for case-insensitive matching, whitespace trimming, and sorting. See how many duplicates were removed. Useful for cleaning up data files, log outputs, CSV lists and any text with repeated lines.
Frequently Asked Questions
Does it preserve the original order?
Yes, by default the first occurrence of each line is kept and subsequent duplicates are removed, preserving the original order. You can optionally sort the output alphabetically.
What does case-insensitive matching do?
When enabled, lines like 'Hello' and 'hello' are treated as the same line. Only the first occurrence is kept.
Can I use this for CSV data?
Yes. Each line of your CSV is treated independently. This is useful for removing duplicate rows from CSV files that don't have headers, or for deduplicating lists of values.