Remove Duplicate Lines
Remove Duplicate Lines
Clean up any list by deleting repeated lines. Trim, sort, and ignore case with one click.
How to Use This Tool
Paste your list into the input box, one item per line. The unique lines appear on the right instantly. Use the options to trim whitespace, ignore capitalization, drop blank lines, or sort the result alphabetically.
Great for Cleaning Data
Email lists, keyword lists, and exported data often contain duplicates that cause errors or skew counts. Removing them here is faster than a spreadsheet, and the live count shows exactly how many duplicates were stripped out.
Frequently Asked Questions
Does it keep the first or last duplicate?
It keeps the first occurrence of each line and removes the later repeats.
Can it ignore capitalization?
Yes. Turn on “Ignore case” to treat Apple and apple as the same line.
Is there a size limit?
It handles large lists comfortably since everything runs locally in your browser.