Is the comparison case-sensitive?

Yes. 'Apple' and 'apple' are treated as different lines. Convert to the same case first if you need case-insensitive deduplication.

Does this preserve line order?

Yes. The first occurrence of each line is kept in its original position. Only subsequent duplicates are removed.

All blank lines are considered identical. If you have multiple blank lines, only the first one is kept.

There is no strict limit. The tool processes everything in your browser, but very large texts (100,000+ lines) may take a moment.

Text Tools

Remove duplicate lines from text blocks instantly. Paste your text and get a clean list with only unique lines — perfect for data cleanup.

Input Text

Blank lines are treated as identical — consecutive blanks will be reduced to one.
Comparison is case-sensitive: 'Hello' and 'hello' are treated as different lines.
Original line order is preserved — only the first occurrence of each line is kept.

Is the comparison case-sensitive?: Yes. 'Apple' and 'apple' are treated as different lines. Convert to the same case first if you need case-insensitive deduplication.
Does this preserve line order?: Yes. The first occurrence of each line is kept in its original position. Only subsequent duplicates are removed.
How are blank lines handled?: All blank lines are considered identical. If you have multiple blank lines, only the first one is kept.
Is there a line limit?: There is no strict limit. The tool processes everything in your browser, but very large texts (100,000+ lines) may take a moment.