Remove Duplicate Lines Online

Paste your data and see duplicates removed live as you type. Choose case sensitivity, trim whitespace, and optionally remove empty lines.

Each new line is treated as a separate item.
Lines: 0 • Unique: 0 • Removed: 0
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Remove Duplicate Online: Online Tool to Remove Duplicates

I was removing duplicate lines frequently, but when I used to visit other sites, I don't like the UI (User Interface) of many websites. Some sites are offering an excellent user interface, but their domains are hard to remember to visit again. So I thought of creating my website focusing on better user interface and easy to remember domain name to remove duplicate lines online. That's how this site is born.

You can use this website to remove any duplicate data online without signup or downloading any software to do the task.

How to use this tool?
First, take the duplicate data and put in the above form and click on "Remove Duplicates!" button. Once you click that button, it will remove or clean all duplicate entries and keep unique data in the form.

  • Remove Empty Lines: Check this option to remove any empty lines which are present in your input text. By default, we don't remove any extra blank line present in the text.
  • Case Sensitive: Check this option to consider input text has case sensitive text so that capital letter "A" and small letter "a" are not same text and they are not considered as duplicate text. By default, we don't view input text as case sensitive text.

Note: This tool only compares duplicate entries in new lines. It won't consider duplicates in the same line, so if you are trying to remove duplicates in the same line, then our onlinetoolssite.com tool won't work.

1) Remove Duplicate Lines
Example Input: 
text line 1
text line 1
text line 2
Example Output: 
text line 1
text line 2
2) Remove Duplicate Numbers
Example Input: 
1
1
2
Example Output: 
1
2
3) Remove Duplicate Keywords
Example Input: 
Remove Duplicate Query
Remove Duplicate Query
Remove Duplicate Lines
Remove Duplicate Words
Example Output: 
Remove Duplicate Query
Remove Duplicate Lines
Remove Duplicate Words
4) Remove Duplicate Letters
Example Input: 
A
A
B
Example Output: 
A
B
5) Remove Duplicate Values
Example Input: 
50
50
100
Example Output: 
50
100
6) Remove Duplicate Emails Online
Example Input: 
[email protected]
[email protected]
[email protected]
Example Output: 
[email protected]
[email protected]
7) Remove Duplicate URLs
Example Input: 
https://onlinetoolssite.com/contact-us.html
https://onlinetoolssite.com/contact-us.html
https://onlinetoolssite.com/privacy-policy.html
Example Output: 
https://onlinetoolssite.com/contact-us.html
https://onlinetoolssite.com/privacy-policy.html
Above is the few extensive use case you can use our online tool to remove duplicate data. I'm sure you can use our tool in many other duplicate removal purposes. For example: duplicate phone number removing, duplicate name removing, duplicate domains removing, duplicate chars removing, etc., Hope you will find our tool useful.