Remove Duplicate Lines
Remove duplicate text lines while keeping the first occurrence and original order.
Convert in your browser · No sign-up
Optional whitespace trimming and case folding affect comparison only. The first original line, including its spaces, is kept.
Up to 100,000 UTF-16 units per input · 0 / 100,000
How to use
- Paste your text or load the example.
- Choose the mode or options, then run the tool.
- Review the result, then copy or download the TXT file.
Example
apple banana apple → apple banana
Details and limitations
Remove duplicate text lines while keeping the first occurrence and original order.
Optional whitespace trimming and case folding affect comparison only. The first original line, including its spaces, is kept.
Text stays in your browser; it is not sent to a conversion server.
Related tools
Format references
Tool page updated: