Text Tools
Duplicate Line Remover
Strip duplicate lines from any list, fast.
About this tool
Got a messy list with repeated entries? Paste it in and get a clean, de-duplicated version back. Useful for email lists, URL lists, CSV columns, log files — anywhere duplicates creep in.
How to use
- Paste your lines.
- Choose case-sensitive or case-insensitive matching.
- Click Remove Duplicates.
Benefits
- Case-sensitive or insensitive matching
- Preserves order
- Handles huge lists
Real-world use cases
- • Cleaning email lists
- • Deduping log entries
- • Tidying CSV columns
Tips & best practices
- • Use case-insensitive mode for emails
- • Sort alphabetically after deduping for easier review
- • Trim whitespace first for best results
Frequently asked questions
Will it remove blank lines?
Optionally — there's a checkbox to strip blanks.
Does it sort the result?
Only if you ask it to — order is preserved by default.
Is there a line limit?
Tens of thousands of lines work comfortably.
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