Werkery

Remove Duplicate Lines

Strip duplicate lines from any text. Preserve order or sort. Case-sensitive toggle. Shows count of removed lines.

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How it works

  1. 1
    Paste
    Lines you want to deduplicate.
  2. 2
    Toggle
    Case + whitespace handling.
  3. 3
    Copy
    Output excludes the duplicates.

Frequently asked

What if I want to keep blanks?

By default, the deduper keeps the first occurrence of a blank line and drops subsequent ones. Toggle trim off to treat lines with different trailing whitespace as distinct.

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Tool designed and editorially reviewed by Felix Brübach. Text drafted with AI assistance and reviewed for legal and factual accuracy before publication. Not legal advice — for complex cases, consult a lawyer.
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