Remove Duplicate Lines
Remove repeated lines while keeping first or last occurrence order.
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How to use the Remove Duplicate Lines
- Open the Remove Duplicate Lines.
- Enter your input in the fields provided - results update as you type where practical.
- Use Copy or Download to take the result with you, or Reset to start again.
How it works
Compares lines exactly, or case-insensitively if you choose. Blank lines can be kept or dropped.
Privacy note: this tool runs locally in your browser. Your input is not uploaded, stored in analytics, or placed in the page URL.
Frequently asked questions
Is the Remove Duplicate Lines free?
Yes. It is completely free, needs no account, and runs in your browser.
Is my data uploaded when I use the Remove Duplicate Lines?
No. Processing happens locally on your device. We do not upload your inputs, files or generated passwords.
How does the Remove Duplicate Lines work?
Compares lines exactly, or case-insensitively if you choose. Blank lines can be kept or dropped.