Remove Duplicate Lines
De-duplicate, trim, clean, and sort lines — in your browser.
Sort
0 → 0 lines
About Remove Duplicate Lines
Remove duplicate lines from any text in one pass: this tool dedupes your lines, trims whitespace, drops blank lines, and can sort the result A→Z or Z→A. Paste your list, toggle the options you want — including case-insensitive matching — and get clean output instantly, with a before-and-after line count. Everything runs in your browser, nothing uploaded.
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 remove duplicate lines and sort alphabetically?
- Yes. Turn on sorting to arrange the deduplicated lines A→Z or Z→A, so you get a clean, ordered list in one step.
- 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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