Remove Duplicate Lines
Strip repeated lines from a list, optionally ignoring case.
Free No signup Runs in your browser — nothing uploaded
Result
How to use the Remove Duplicate Lines
- Paste your content, or load a file.
- The result appears as you type.
- Copy or download the output.
Frequently asked questions
- Which duplicate is kept?
- The first occurrence, so the original order is preserved.
- Do my files get uploaded?
- No. This tool runs entirely in your browser, so the file never leaves your device.