Line Deduplicator

Remove duplicate lines from any text instantly. Sort, trim whitespace, ignore case, and keep first or last occurrence. Free online line deduplicator tool - no install needed.

142K uses this month Rating 4.8★ Real-time preview Updated Apr 2026

YOUR TEXT / LIST

0 lines · 0 characters

OPTIONS

Case-insensitive (treat "Apple" and "apple" as the same) Trim whitespace from each line before comparing Remove blank / empty lines Keep last occurrence (instead of first) when duplicate found

SORT OUTPUT

0 Total Lines

0 Unique Lines

0 Duplicates Removed

0 Blank Lines

DEDUPLICATED OUTPUT

0 lines · 0 characters

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⚡ All Categories

📄PDF Tools 🖼️Image Tools 📝Text Tools 💵Finance 🤖AI Writing 🔢Math 📱Social Media 🎲All Tools

💡 PRO TIP

When cleaning email lists, always enable both Case-insensitive and Trim whitespace - email addresses are case-insensitive, and most export tools add invisible trailing spaces that cause false duplicates.

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