Does the tool keep the first occurrence of each line?
Yes. Duplicate removal keeps the first seen line and removes later repeats.
Remove Duplicate Lines Online
Clean up repeated lines from text without leaving your browser.
Files and text are processed locally in your browser. No upload. No signup.
How to use
- 1 Paste a block of text with one value per line.
- 2 Run duplicate removal once you are ready.
- 3 Copy the cleaned output for the next step in your workflow.
Features
- Keeps the first occurrence of each line.
- Works well for keyword lists, logs and IDs.
- Stays fully local in your browser.
FAQ
Is my text processed locally?
Yes. Everything stays in your browser.