Duplicate Line RemoverRemove Repeated Lines Instantly 🧹
Paste text, remove duplicates. Case-sensitive option, trim whitespace, show removed lines.
0 lines
0 unique · 0 removed
Output will appear here...
Input: 0 linesUnique: 0Removed: 0Saved: 0 lines
What is a Duplicate Line Remover?
A duplicate line remover is a free online tool that scans your text and removes all repeated lines, keeping only the first occurrence of each unique line. It's essential for cleaning up lists, email lists, data exports, code, and any text where duplicates are unwanted.
How to Remove Duplicate Lines
- Paste your text into the input field above.
- Toggle options: Trim Whitespace, Remove Empty Lines, Case Sensitive.
- See instant results — unique lines on the left, removed duplicates counted.
- Click "Copy Unique Lines" or "Download .TXT".
Common Use Cases
- Email lists — Remove duplicate email addresses before sending campaigns
- URL lists — Deduplicate URLs for SEO audits and crawling
- Keyword lists — Clean up keyword research data
- Data exports — Remove duplicate rows from CSV/Excel exports
- Code — Remove duplicate imports, lines, or entries
- Shopping lists — Remove duplicate items
Frequently Asked Questions
Does it remove blank lines?
Yes, if "Remove Empty Lines" is toggled on (default). Blank lines are treated as duplicates.
Is the line order preserved?
Yes! The original order is preserved. Only subsequent duplicates are removed.
Can I do case-sensitive matching?
Yes! Toggle "Case Sensitive" to distinguish between "Hello" and "hello".
Is my text data private?
Yes! All processing happens in your browser. Nothing is sent to any server.