Remove Duplicate Lines
Remove repeated lines while preserving original order.
Check other text cleaning tools.
Got a long list with repeated entries? This tool removes duplicate lines while keeping the original order, perfect for cleaning up email lists, URL lists, log files or any line-based dataset.
How to use
- Paste your lines into the box (one entry per line).
- Optionally enable “Case-insensitive” to match regardless of capitalization.
- Click “Remove duplicates”, then Copy the cleaned list.
Frequently asked questions
- Does it keep the original order of lines?
- Yes. The first occurrence of each line is preserved in its original position; only later duplicates are removed.
- Can I ignore letter case?
- Yes. Enable the case-insensitive option to treat “Apple” and “apple” as duplicates.
- Are blank lines removed?
- Blank lines are treated like any other line: only the first blank line is kept; the rest are considered duplicates.
- Is this tool free?
- Yes, it is 100% free and runs entirely client-side. Your list never leaves your device.