Remove Duplicate Lines
Strip duplicate lines from a list, keeping the first occurrence. Optional case-insensitive and trim modes.
Runs in your browser — files never leave your device
Result (0 lines)
How it works
Paste a list and remove repeated lines, optionally ignoring case and surrounding spaces.
Great for cleaning up email lists, keywords or logs.
Frequently asked questions
- Which duplicate is kept?
- The first occurrence of each line is kept; later duplicates are removed.
- Is my text uploaded?
- No — deduplication happens in your browser.
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