Remove Duplicate Lines
Remove duplicate lines from any text in your browser. Your text never leaves your device. Free and private.
No uploads. No account. Free to use.
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- Files never leave your device
- Runs entirely in your browser
- No signup required
- Free
What is Remove Duplicate Lines?
Remove Duplicate Lines keeps only the first occurrence of each unique line. Processing is pure JavaScript in the browser.
Key features
- Case-sensitive or insensitive option
- 100% client-side
How to use it
- Open the tool.
- Paste text.
- Click Remove Duplicates.
- Copy the cleaned result.
When to use it
Use for cleaning log files, lists or config files that contain repeated entries.
In this family
Text utilities — related tools in the same cluster.
Frequently asked questions
Related tools
More in Text tools.