Remove Duplicate Lines Tool
Remove Duplicate Lines Tool: This free online tool helps eliminate duplicate lines from any text instantly. Perfect for cleaning lists, code, datasets, or any text content. Simply paste your text and get unique lines in seconds.
How does the remove duplicate lines tool work?
The tool processes each line of text, compares it with previous entries, and removes any duplicates while maintaining the original order. It uses JavaScript's Set object combined with array manipulation for efficient deduplication.
Is this tool case-sensitive?
Yes, the tool treats "EXAMPLE" and "example" as different lines. For case-insensitive processing, convert your text to lowercase first using any text editor before using this tool.
Does it handle different line endings?
The tool automatically normalizes Windows (CRLF) and Unix (LF) line endings. It preserves the line ending format of your original text in the output.
What's the maximum text size allowed?
The tool can handle up to 50,000 lines of text in modern browsers. For extremely large files, consider splitting the content into smaller chunks.
Is my data secure?
All processing happens client-side in your browser. No data is sent to servers or stored anywhere, ensuring complete privacy for your content.