How to remove duplicate lines in 3 easy steps
- 1
Paste your list
One entry per line.
- 2
Review the count
The tool reports lines in vs. unique kept.
- 3
Copy the result
The deduplicated list is ready to use.
Why use the remove duplicate lines tool from Super Utility Hub?
Email blasts, tag lists, and data extracts accumulate duplicates. This tool removes repeated lines while keeping each first occurrence in order, and tells you exactly how many lines it removed.
Works on any line-based text — emails, URLs, product codes, hashtags — with case-sensitive matching.
- Processes everything in your browser — no upload servers involved
- Free forever with unlimited uses
- Works on Windows, macOS, Linux, Android and iOS
- No watermark or branding on your output, ever
Frequently asked questions
Does it keep order?
Yes — the first occurrence of each line stays in its original position; later duplicates are dropped.
Is matching case-sensitive?
Yes — “Email” and “email” are treated as different lines. Normalize case first if you want case-insensitive deduping.
What about blank lines?
Blank lines count as duplicates of each other — one blank line remains. Use Remove Blank Lines first if you want none.