🧹Text Deduplicator

How to Use

1. 1

   Paste your text

   Paste the text with duplicate lines into the left area. Works great for lists, URLs, log entries, and more.

2. 2

   Configure options

   Choose whether to use case-sensitive matching, trim whitespace, or remove empty lines.

3. 3

   Copy the result

   The deduplicated text appears on the right, preserving the original order. Click Copy to copy to clipboard.

FAQ

Does this preserve the original line order?

Yes. This tool keeps lines in their original order, retaining the first occurrence of each duplicate and removing subsequent ones. Use text-sorter if you also need to sort.

Can I treat uppercase and lowercase as the same?

Yes. Uncheck 'Case sensitive' to treat 'Apple', 'apple', and 'APPLE' as duplicates. The default is case-insensitive.

What does 'Trim whitespace' do?

When enabled, leading and trailing spaces are removed from each line before comparison, so ' apple ' and 'apple' are treated as duplicates.

How is this different from the Text Sorter?

Text Sorter sorts lines and optionally removes duplicates. This tool removes duplicates without sorting, preserving the original order.

How many lines can it handle?

The tool runs entirely in your browser and can handle tens of thousands of lines without any issues. No data is sent to a server.