Remove Duplicate Lines is a free online tool that removes repeated lines from your text, keeping only the first occurrence of each unique line. Supports case-sensitive and case-insensitive modes.
A duplicate line remover scans multi-line text and filters out any lines that have already appeared, preserving the original order of first occurrences. It is commonly used to clean up lists, deduplicate CSV data, remove repeated log entries, and process keyword lists.
Remove Duplicate Lines
Remove duplicate lines from your text instantly.
How to Use
- Paste your text or list into the input field
- Choose whether matching should be case sensitive
- Optionally enable Trim Lines to ignore leading and trailing spaces
- Click Remove Duplicates to process your text
- Copy the deduplicated output
Example
Input
apple banana apple cherry banana
Output
apple banana cherry
FAQ
- What does Remove Duplicate Lines do?
- It scans your text line by line and removes any lines that are identical to a previously seen line, keeping only the first occurrence.
- Is this tool free?
- Yes, it is completely free with no registration required.
- Does this tool run in the browser?
- Yes, all processing happens locally in your browser with no data sent to a server.