Duplicate Line Remover
Remove duplicate lines from text
Last updated:Duplicate line removal scans pasted text and outputs only the unique lines, with optional case-insensitive matching and order preservation. LlamaPDF processes everything in your browser — ideal for cleaning email lists, log files, or any line-delimited dataset you'd rather not send to a third-party service.
Your file stays on your device — never uploaded
How to remove duplicate lines
- 1
Paste your text — such as a list of names, emails, URLs, or any line-separated data — into the input box above.
- 2
Choose whether to be case-sensitive or case-insensitive when detecting duplicates. You can also opt to preserve the original order of lines.
- 3
Click Remove Duplicates and your cleaned list appears instantly. Copy the deduplicated text to your clipboard. Processing happens entirely in your browser.
Why use our duplicate remover?
Duplicate entries creep into lists constantly — exported email lists, log files, spreadsheet columns, or any data copied from multiple sources. Cleaning them manually is slow and easy to get wrong. This tool strips exact duplicate lines in a single click, leaving you with a clean, unique set of entries.
Need to compare two versions of a list? Try the text comparison tool. Working with spreadsheet data? Our CSV to Excel converter can help you organize data further.