Skip to main content

Remove Duplicate Lines

Remove Duplicate Lines keeps only the first occurrence of each unique line, deleting any subsequent repeats. This is useful for deduplicating lists, cleaning up log output, merging word lists, or preparing data for import where unique rows are required.

Characters 0
Words 0
Lines 0

Frequently Asked Questions

Is the comparison case-sensitive?

Yes — "Apple" and "apple" are treated as different lines. Normalize your text to the same case first if you want case-insensitive deduplication.

Does it preserve the original order?

Yes — the first occurrence of each line is kept in its original position. Only later duplicates are removed.

Sort LinesRemove Blank LinesTrim WhitespaceWord Frequency Counter