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Remove Duplicate Lines

Remove duplicate lines from text and lists directly in your browser.

Result
0 original 0 remaining 0 removed

Processed locally in your browser. Your input is not uploaded.

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Remove Duplicate Lines Online

Clean lists and blocks of text by removing repeated lines while keeping the first occurrence of each line in its original position.

Case-sensitive duplicate removal

Choose whether uppercase and lowercase text should be treated as different values. For example, Apple and apple can either remain separate or be treated as duplicates.

Clean lists and text

Duplicate line removal is useful for cleaning lists of names, URLs, identifiers, keywords, log entries and other line-based text.

Private browser-based processing

Your text is processed locally in your browser and does not need to be uploaded to the HandyKitz server.

Practical example

Use one entry per line for names, identifiers or URLs. Case sensitivity determines whether otherwise identical values with different capitalization count as duplicates.

Paste three lines: apple, pear, apple. Removing duplicates leaves two lines, apple followed by pear.

Frequently asked questions

Why do visually identical lines sometimes remain?

Leading or trailing spaces can make lines different. Enable whitespace trimming if those spaces should not distinguish entries.

Does duplicate removal delete repeated words within a line?

No, whole lines are compared. A line such as red red stays unchanged unless the entire line is a duplicate.

What happens to empty lines?

They can be removed with the empty-line option. Otherwise repeated empty lines are treated as duplicates, so only the first remains.