Remove Duplicate Lines

Paste your text to remove duplicate lines. Configure case sensitivity and whitespace handling.

How to Use

  1. 1Paste your text with duplicate lines into the input area.
  2. 2Choose whether to preserve original order or sort the output.
  3. 3Toggle case sensitivity and whitespace handling options.
  4. 4Copy the deduplicated text from the output area.

Frequently Asked Questions

Does the tool preserve the order of lines?

Yes, by default the tool keeps the first occurrence of each unique line in its original position. You can optionally sort the output alphabetically.

Can I do a case-insensitive deduplication?

Yes. Enable the case-insensitive option to treat 'Hello' and 'hello' as duplicates. The tool keeps the first occurrence it encounters.

How does it handle blank lines?

By default, all blank lines after the first one are treated as duplicates and removed. You can toggle this behavior to keep all blank lines if needed.