Free Duplicate Line Remover
Clean text lists instantly by removing repeated lines and keeping only unique entries.
What Is a Duplicate Line Remover?
A duplicate line remover is a text-cleaning tool that identifies repeated
lines and creates a list containing unique entries. It is useful for cleaning
names, email addresses, URLs, product codes, IDs and other line-based data.
How to Remove Duplicate Lines
- Paste or type your list into the Input Text area, with one item per line.
- Select whether to ignore letter case, trim spaces, remove blank lines or sort the results.
- Click Remove Duplicate Lines.
- Review the cleaned result and copy it or download it as a text file.
Features
- Preserve first occurrence: Keeps the first instance of each unique line.
- Case-insensitive mode: Treats lines such as Apple and apple as duplicates.
- Whitespace handling: Optionally trims spaces at the start and end of lines.
- Blank line handling: Optionally removes empty lines.
- Alphabetical sorting: Sorts the resulting unique lines.
- Download and copy: Save your result as a plain-text file or copy it to the clipboard.
Frequently Asked Questions
Is this tool free?
Yes. You can remove duplicate lines and download the result for free.
Does the tool upload my text?
No. The duplicate-removal process runs in your browser. Your text is not uploaded to our server for processing.
Will the original order be preserved?
Yes. By default, unique lines remain in their original order. Enable alphabetical sorting if you want them sorted.
Are Apple and apple considered duplicates?
Only when Case-insensitive comparison is enabled. Otherwise, capitalization is treated as significant.
Can I download the cleaned list?
Yes. Click Download .txt to save the cleaned result as a plain-text file.