Input
Duplicates
Found: 0 duplicates
Frequently Asked Questions
How does duplicate line detection work?
The tool compares each line in your text and counts how many times identical lines appear. Lines that appear more than once are considered duplicates.
Does whitespace affect duplicate detection?
Yes, lines with different amounts of whitespace are treated as different lines. For example, "text" and " text" would be considered different lines.
What if I want to remove duplicates instead of just finding them?
For removing duplicates while keeping unique lines, use our "Remove Duplicate Lines" tool which keeps one instance of each unique line.
Can this handle large text files?
The tool works in your browser and its performance depends on your device. For very large files (hundreds of thousands of lines), consider using command-line tools like 'uniq' on Unix systems.