Remove Duplicate Lines
Remove duplicate lines from any list: emails, keywords, URLs.
Your files never leave your device
- Private: runs in your browser
- Free, with no daily limits
- No sign-up, no watermark
- Works offline once loaded
How to use Remove Duplicate Lines
- 1Paste your list — one item per line.
- 2Choose ignore case, trim spaces and sorting.
- 3Copy the clean list.
Why use this remove duplicate lines
- Ignore case and extra spaces
- Remove empty lines
- Sort A–Z, Z–A or keep order
- Shows duplicates removed
Most online tools upload your file to their server, process it there and then make you pay to remove limits. This one does the work inside your browser tab instead — so it is faster, it is free for us to run, and your document stays with you.
Questions about Remove Duplicate Lines
Is there a size limit?
No set limit. Lists with hundreds of thousands of lines work fine on a normal laptop because everything runs locally.