Duplicate Line Remover
Remove repeated lines from lists, logs, keywords, emails and plain text instantly in your browser.
How to Use the Duplicate Line Remover
Paste a list or block of text into the input box, choose whether comparisons should be case sensitive, whether surrounding spaces should be trimmed and whether blank lines should be removed. Click Remove Duplicates to keep the first occurrence of each unique line.
Practical Example
If the input contains apple, banana, apple, Orange and orange on separate lines, case-insensitive mode keeps apple, banana and Orange while removing the repeated apple and the differently capitalized orange entry.
Factors That Affect the Result
Case sensitivity, hidden spaces, empty lines and Unicode differences can determine whether two lines are treated as duplicates. Use trimming for copied spreadsheet data and enable case-sensitive mode when capitalization must remain significant.
Frequently Asked Questions
Does the tool keep the first duplicate line?
Yes. It keeps the first occurrence and removes later matching lines.
Can it ignore capitalization?
Yes. Leave case-sensitive mode disabled to treat values such as Apple and apple as duplicates.
Is my text uploaded?
No. Duplicate detection runs directly in your browser.