Duplicate Line Remover Online
Free online duplicate line remover. Remove repeated lines from text, keeping only unique entries. Preserves or ignores original order.
Input
Unique Lines
💡 What is this
Duplicate Remover
- Scans text line by line and removes any repeated lines, keeping only the first occurrence.
- Optionally case-insensitive and whitespace-trimming.
📖 How to use
Step by Step
- Paste text with one item per line
- Toggle case sensitivity and trim options
- Click Remove Duplicates
- Copy the deduplicated result
🎯 Use cases
When to use
- Cleaning up email or URL lists
- Removing duplicate log entries
- Deduplicating CSV data
- Cleaning keyword lists for SEO
Frequently Asked Questions
Does it preserve order?▾
Yes. The first occurrence of each line is kept in its original position. Only subsequent duplicates are removed.