Text & Writing

Duplicate Line Remover

Paste a list and remove every repeated line, keeping the first occurrence of each. Compare the line counts before and after, then copy or download the result.

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Remove duplicate lines

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Matching options

Case sensitive“Apple” and “apple” count as different linesIgnore surrounding spacesTrim each line before comparingRemove blank linesDrop empty lines completely

Before

0 lines

After

0 lines

0Lines before

0Lines after

0Duplicates removed

0Unique lines

Nothing is uploaded

Your text is processed in your browser, so even private lists and exported data stay on your device.

How duplicates are detected

Each line is compared with the ones before it. The first time a line appears it is kept; later repeats are removed, so the original order is preserved. Turning off case sensitivity treats “Email” and “email” as the same entry, and ignoring surrounding spaces means " apple" matches "apple".

Typical uses

Cleaning an email or subscriber list exported from a spreadsheet.
Removing repeated keywords before importing them into an SEO tool.
Tidying log lines, URLs or product codes collected from several sources.

Good to know

Frequently asked questions

Is the original order kept?

Yes. The first occurrence of each line stays exactly where it was and only later repeats are removed.

What does case sensitivity change?

With it on, “Apple” and “apple” are two different lines. With it off, only the first of them is kept.

Can I also sort the result?

Use the Text Sorter tool if you need sorted output — it can remove duplicates and sort in one step.

Is my text sent to a server?

No. Everything happens in your browser and nothing is uploaded.

Remove duplicate lines

Before

After

How duplicates are detected

Typical uses

Frequently asked questions

Related tools

Word Counter

Case Converter

Text Cleaner