Remove duplicate lines from text
Paste your lines
Enter or paste multiple lines of text into the input field.
Deduplicate automatically
See duplicate lines removed, keeping only unique entries.
Copy the result
Click Copy to save the deduplicated lines to your clipboard.
Yes, the Duplicate Line Remover is completely free with no limitations. Remove duplicates from as many lines as you need without any registration or restrictions.
Yes, all processing happens locally in your browser using JavaScript. Your data is never sent to any server, making it safe to process sensitive lists like email addresses, customer data, or confidential records.
The tool scans your text line by line and removes duplicate entries, keeping only unique lines. It can preserve the original order of first occurrences or sort the results alphabetically.
Removing duplicates is essential for cleaning email lists, deduplicating database exports, processing log files, cleaning up CSV data, merging lists from multiple sources, and preparing data for analysis.
Yes, you can toggle case sensitivity. With case-insensitive mode, 'Apple' and 'apple' are treated as duplicates. This is useful when cleaning data where capitalization may be inconsistent.