Remove Duplicate Lines from a List

Paste your list below - Remove Duplicates is already switched on, so duplicate lines are stripped out instantly as you type. The first occurrence of each line is kept; every later copy is removed.

Case sensitivity matters: "Apple" and "apple" count as different lines unless you turn off Case Sensitive in the options below. Trimming leading and trailing whitespace is on by default too, so "apple " and "apple" are already treated as the same line - this catches a lot of near-duplicates that would otherwise slip through.

Need to dedupe and reorder at once? Turn on one of the Sort options alongside Remove Duplicates and both apply together in a single pass. Need more control - trimming rules, splitting CSV values first, or a different output format? The full Text Fixer tool has all of this tool's options plus many more, in one place.

Text Fixer & Cleaner - Clean & Transform Lines

Clean, transform, and reformat your text lines with instant live preview.

Input
Type or Drag & Drop a file
Output
Output Options

Frequently Asked Questions

How do I remove duplicate lines without Excel?
Paste your list into the box above, make sure Remove Duplicates is checked, and copy the result. It works for any line-separated data - names, emails, IDs - with no spreadsheet software needed.
Can I remove duplicates case-insensitively?
Yes. Open the options panel and uncheck Case Sensitive. 'Apple' and 'apple' will then be treated as the same item, and only one copy will appear in the output.
Does deduplicating keep the original order, or does it sort the list?
By default the original order is kept - the first time each item appears is what stays, and everything after it is removed. If you also want the result sorted, enable Sort A-Z in the options; both apply together.
Why don't identical-looking lines get removed as duplicates?
This almost always means there's an invisible character in one of the lines, such as a non-breaking space or a hidden carriage return. Two lines that look the same on screen can still be technically different. Paste your list into the Invisible Character Detector to see exactly what's there, or read more in why identical lines don't match.
Can I remove duplicates that appear across two different lists?
That's a different operation from deduplicating a single list. See removing duplicates across multiple lists for how to find and remove items that repeat between separate lists.
Is my data uploaded anywhere when I use this tool?
No. Everything runs locally in your browser using JavaScript. Your list is never sent to a server or stored anywhere - you can even disconnect from the internet after the page loads and the tool still works.

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