How it works
Paste a list — one item per line — and click Remove duplicates. The tool keeps the first occurrence of each line and deletes every repeat, so your list ends up with only unique entries. Turn on "case-insensitive" to treat different capitalizations as the same, "trim lines" to ignore stray leading and trailing spaces, and "sort result" if you'd also like the output alphabetized. It reports how many duplicates were removed. Everything runs locally in your browser; nothing is uploaded.
Remove Duplicate Lines
Keep only unique lines, with case and spacing options.
FAQ
How does removing duplicate lines work?
The tool keeps the first time each line appears and deletes every later copy. The original order of the surviving lines is preserved unless you also choose to sort them.
Can it ignore case and spacing differences?
Yes. Turn on "case-insensitive" so "Apple" and "apple" count as duplicates, and "trim lines" so lines that differ only by leading or trailing spaces are treated as the same.
Does it tell me how many were removed?
Yes. After running, the tool reports how many duplicate lines were deleted and how many unique lines remain.
Is my text uploaded anywhere?
No. Everything runs entirely in your browser. Nothing you paste is transmitted or stored.