Remove Duplicate Lines
Remove duplicate lines from text and keep only unique entries. Case-sensitive or insensitive.
Runs entirely in your browser — nothing is uploaded or stored on any server.
About Remove Duplicate Lines
Updated Jan 2025This tool removes duplicate lines from any block of text, leaving only unique lines. You can choose between case-sensitive and case-insensitive matching, and optionally sort the output. Useful for cleaning up lists, log entries, email addresses, or any line-delimited data.