Simple & private
Duplicate Line Remover
Keep the first occurrence of every line.
What is this tool?
The Duplicate Line Remover scans a block of text line by line and keeps only the first occurrence of each line, removing every repeat that follows.
How to use this tool
- Paste your list into the input box, one item per line.
- Click "Run tool".
- Review the cleaned list in the result box.
- Copy the result once it looks correct.
Example
A list with "apple, banana, apple, cherry" (one per line) becomes "apple, banana, cherry" — the second "apple" is removed.
Common use cases
- Cleaning an email list before a mail merge
- Tidying a to-do list that grew duplicate tasks
- Removing repeated rows copied from a spreadsheet
- Preparing a unique keyword or tag list
Frequently asked questions
Does it keep the first or last copy of a duplicate? +
It keeps the first occurrence and removes any that appear after it.
Is the comparison case-sensitive? +
Yes, "Apple" and "apple" are treated as different lines. Use the Whitespace Cleaner first if you need to normalise spacing.
Does it change the order of the remaining lines? +
No, the original order of the first occurrences is preserved.