Remove Duplicate Lines
Delete repeated lines from a list, keep the first copy, and optionally sort or ignore case.
Runs in your browser. Your text and files never leave your device.
How to remove duplicate lines
- Paste your list, one item per line.
- Pick the options you need. The result updates instantly.
- Copy the clean list.
Useful for email lists, keyword lists, product SKUs and log files. Need to see what changed between two lists? Use text compare.
Frequently Asked Questions
Which copy of a duplicate line is kept?
The first one. Later copies are removed, and the order of the remaining lines stays the same unless you choose to sort.
What does "Ignore case" do?
It treats "Apple" and "apple" as the same line, so only the first spelling is kept.
Can I remove duplicates from an Excel column?
Yes. Copy the column, paste it here, then copy the result back into Excel. Each cell becomes one line.
Is there a size limit?
It handles hundreds of thousands of lines in a modern browser. Nothing is uploaded, so large private lists are fine.