Remove Duplicate Lines
Paste a list or block of text and strip out duplicate lines — keep the first occurrence, the last occurrence, or remove every duplicated line entirely. Sort and case options included.
Input
Output
Why use this tool?
onlinetexttools.com has good privacy copy but caps free daily usage and nags with upsell dialogs. miniwebtool.com nags you to disable your ad-blocker. This tool combines miniwebtool's full option set (case sensitivity, keep-first/keep-last/remove-all, whitespace trim, blank-line handling, before/after stats) with a real privacy guarantee and zero ads or caps.
Frequently asked questions
Is this remove duplicate lines tool free, with no daily limit?
Yes — 100% free, no signup, no daily usage cap, and no watermark, unlike some competitors that limit free use per day.
What's the difference between the three modes?
Keep first occurrence removes every repeat after a line's first appearance. Keep last occurrence removes earlier repeats and keeps the last one. Remove all duplicates removes every line that appears more than once, keeping only lines that are unique.
Can it remove duplicates ignoring capitalization or extra spaces?
Yes — toggle "case-insensitive" (uncheck Case-sensitive) to treat "Apple" and "apple" as the same line, and "Trim whitespace" to ignore leading/trailing spaces when comparing lines.
Is my text uploaded anywhere?
No. Everything runs locally in your browser using JavaScript. Your text is never sent to a server.