🧹 Remove Duplicate Lines

Remove duplicate lines from your text while preserving order. Keep only the first occurrence of each unique line. Perfect for cleaning up lists, data sets, and removing repetitive entries.

Enter Your Text (one item per line):

Ignore Case

📌 Unique Lines:

💡 How it works:

Paste your text with one item per line
Click "Remove Duplicates" to process
First occurrence of each line is kept
Order is preserved from original text
Enable "Ignore Case" to treat "Apple" and "apple" as duplicates
Statistics show duplicates removed

📝 Examples:

Input (With Duplicates):

apple banana apple cherry banana date apple

Output (Duplicates Removed):

apple banana cherry date

Statistics:

Original Lines: 7
Unique Lines: 4
Duplicates Removed: 3

Input (Case-Sensitive - Without Ignore Case):

Hello hello HELLO World

Output (Case-Sensitive - Treats as Different):

Hello hello HELLO World

Output (Case-Insensitive - With Ignore Case):

Hello World

📚 Use Cases:

Clean up email lists or contact databases
Remove duplicate entries from data exports
Organize lists and eliminate repetitive items
Prepare data for analysis and reporting
Deduplicate log files or transaction records
Clean up word lists or dictionaries
Remove redundant entries from merged datasets

ℹ️ Note: This tool preserves the order of first occurrence. Duplicates are identified based on exact line matching (or case-insensitive if that option is enabled).