Poista kaksoisrivit

Poista kaksoisrivit – ominaisuudet

• 01

  Flexible matching

  Compare lines case-insensitively and trim leading/trailing whitespace before matching, so "Apple", "apple " and " apple" all count as the same line.

• 02

  Keep first or last

  Preserve the original order by keeping the first occurrence, or keep the last occurrence when the newest entry should win.

• 03

  Removed-count readout

  See how many duplicate lines were deleted at a glance, so you can verify the dedupe did what you expected.

Poista kaksoisrivit – UKK

How do I remove duplicate lines from a list?

Paste your list, one item per line. Duplicate lines are removed instantly and the unique result appears on the right, ready to copy or download.

Does it preserve the original order?

Yes. With "Keep first" selected, lines stay in their original order and only later duplicates are dropped. Choose "Keep last" to keep the final occurrence instead.

Can it ignore case and extra spaces?

Yes. Turn on case-insensitive matching to treat "Email" and "email" as duplicates, and "trim before compare" to ignore leading and trailing spaces.

How many lines can I dedupe?

Very large lists work fine — the tool handles hundreds of thousands of lines in the browser. There's no fixed limit and nothing is uploaded.

Is my data kept private?

Yes. Deduplication happens entirely in your browser; your list is never sent to a server.