Line Deduplicator

Remove duplicate lines from any text instantly. Sort, trim whitespace, ignore case, and keep first or last occurrence. Free online line deduplicator tool - no install needed.

Deduplication Options

Configure how duplicate lines are detected and handled

Case Insensitive
ABC = abc
Trim Whitespace
Ignore leading/trailing spaces
Remove Empty Lines
Strip all blank lines
Sort Result
Alphabetical A → Z

Editor

Paste your text on the left — results appear instantly on the right

0 total lines 0 unique 0 removed
Input 0 lines
Output 0 lines
Your deduplicated lines
will appear here

About This Tool


Features & Use Cases