Remove Duplicate Lines
De-duplicate, trim, clean, and sort lines — in your browser.
Sort
0 → 0 lines
About Remove Duplicate Lines
This tool cleans a list of lines: it removes duplicates, trims whitespace, drops blank lines, and can sort the result. Paste your lines, toggle the options you want, and get clean output instantly — with optional case-insensitive matching for duplicates. Everything runs in your browser.
Frequently asked questions
- Does it keep the first or last duplicate?
- It keeps the first occurrence of each line and removes later duplicates, preserving order unless you also sort.
- Can it ignore case when finding duplicates?
- Yes. Turn on case-insensitive matching to treat 'Apple' and 'apple' as the same line.
- In what order are the steps applied?
- Trim, then remove blanks, then de-duplicate, then sort — a predictable order that gives consistent results.
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