Remove all duplicate lines from text instantly. Remove Duplicate Lines is a free online tool from the ToolsRift Text Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
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How to use Remove Duplicate Lines
Open the Remove Duplicate Lines above — it loads instantly, no account needed.
Enter or upload your input. Everything is processed locally on your device.
Get your result immediately and copy or download it with one click.
Frequently asked questions
Is matching case-sensitive?
Toggle case sensitivity — by default it's case-insensitive.
What if there are blank lines between duplicates?
Blank lines are treated as lines too — enable 'ignore blank lines' to skip them.
Does order of first occurrence matter?
Yes — by default the first occurrence is kept and later duplicates are removed.
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