About Remove Duplicate Lines
This free tool removes duplicate lines from any text, making it perfect for cleaning up lists, data exports, spreadsheet data, log files, and any line-separated content. Simply paste your text, choose your options, and get clean unique lines instantly.
Options Explained
- Case sensitive: When checked, "Apple" and "apple" are treated as different lines. When unchecked, both are considered duplicates.
- Trim whitespace: Removes leading/trailing spaces from each line before comparing, so " apple " and "apple" are treated as the same.
- Remove blank lines: Also removes any empty lines from the output.
Common Use Cases
- Cleaning up exported lists from databases or spreadsheets
- Deduplicating email lists or keyword lists
- Removing repeated entries from log files
- Cleaning up any line-separated data