Writing tool

Duplicate Line Remover

Keep the first occurrence of each line while preserving the original order.

Free browser tool

No Matrix computer needed

✓ No account or card

✓ Use the result right away

✓ Task-specific limits below

Workspace

Use duplicate line remover

Runs in this browser tab

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Result

Your result will appear here. The input stays in this browser tab.

How to use it

Paste one item per line to remove exact duplicate lines from a list.

Try this example

alpha
beta
alpha

What to check

Whitespace and letter case are significant; near-duplicates remain separate.

Review the result before using it in a published page, application, or agent configuration.

Quick answers

Frequently asked questions

Does duplicate removal change the original order?

No. It keeps the first instance of each exact line and removes later copies while preserving the order of retained lines.

Are lines with different case or spaces duplicates?

No. Comparison is exact, so case and whitespace matter. Clean or normalize the text first if near-duplicates should match.

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