Remove Duplicate Lines
Paste text or drop a .txt file to strip duplicate lines — keep the first or last occurrence, with full control over case and whitespace. Runs entirely in your browser.
Your original input is never modified. Everything runs locally in your browser — nothing is uploaded.
This deduplicator runs 100% in your browser. Your text is never uploaded. Choose whether to keep the first or last occurrence of each line, toggle case sensitivity, ignore surrounding whitespace, and skip empty lines. Original line order is preserved.
Frequently asked questions
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