Remove Duplicate Lines
Paste a list and strip out repeated lines instantly. Optionally ignore case, trim surrounding spaces, and sort the cleaned list alphabetically.
Runs in your browser — your files never leave your device
How to use Remove Duplicate Lines
- 1Paste your list, one item per line.
- 2Toggle the options you want — ignore case, trim, or sort.
- 3The de-duplicated result updates live.
- 4Copy the cleaned list with one click.
Frequently asked questions
Is my list uploaded anywhere?
No. Everything is processed in your browser, so your data stays private.
Does it keep the original order?
Yes, unless you enable Sort. Without sorting, the first occurrence of each line is kept in place.
Can it ignore capitalisation?
Yes — enable 'Ignore case' to treat 'Apple' and 'apple' as the same line.