Remove Duplicate Lines
Remove duplicate lines quickly with case sensitivity and order-preservation options.
Remove Duplicate Lines helps you clean repeated lines from large text blocks. Toggle case sensitivity to treat values like "Apple" and "apple" as the same or different, choose whether to preserve original order or sort results, and optionally trim trailing spaces from every line before de-duplication.
Frequently Asked Questions
How does duplicate removal work? +
Scans each line and keeps only unique values based on your selected case sensitivity and order options.
What does case sensitive mode do? +
When enabled, "Apple" and "apple" are treated as different lines and both are kept.
What does preserve order do? +
Keeps unique lines in their first appearance order. When disabled, output is sorted alphabetically.
Is my data private? +
Yes, all processing happens in your browser. No data is sent to any server.
Frequently Asked Questions
- Each line is checked against previously seen lines. Only the first occurrence of each unique line is kept.