Remove Duplicate Lines
Paste a list to remove repeated lines. The first occurrence of each line is kept, in the original order.
- Original lines
- 0
- Lines removed
- 0
- Lines left
- 0
Everything you enter is processed in your browser and is never sent to or stored on a server.
What does this tool do?
It cleans up one-item-per-line lists such as email addresses, keywords, product codes or names by keeping each item only once. The original order is preserved, which is handy when you want to remove duplicates without sorting.
How to use
- Enter or paste your list, one item per line.
- Turn on options such as ignoring case or trimming spaces if needed.
- Check the result and how many lines were removed, then press Copy.
Frequently asked questions
Which line is kept?
When a line appears more than once, the first one is kept and later copies are removed. The order of the remaining lines does not change.
Are lines with different capitalization duplicates?
Not by default. Turn on "Ignore case" to treat Cherry and cherry as the same line and keep only the first.
Is my list saved anywhere?
No. Everything runs in your browser, and your text is never sent to or stored on a server.