Remove Duplicate Lines
Text ToolsRemove repeated lines from any list while keeping the original order.
Your text
Result
What is Remove Duplicate Lines?
Remove Duplicate Lines cleans a list by deleting repeated lines while keeping the original order.
How to use Remove Duplicate Lines
- 1 Paste your list.
- 2 Choose whether to ignore case or trim spaces.
- 3 Copy the deduplicated result.
Supported formats and limits
- Input: multi-line text
- Output: text without repeated lines
- Runs in your browser
Common uses
- Clean a list that contains repeated entries.
- Deduplicate keyword or email lists.
- Tidy exported data before processing it.
Things to know
- Lines must match exactly to be treated as duplicates.
- Order is preserved based on the first occurrence.
Privacy and file handling
Processing happens in your browser; your text is never uploaded.
Frequently asked questions
Does it keep the first occurrence?
Yes. The first time a line appears is kept and later duplicates are removed.
How are duplicate lines detected?
Lines that match exactly are treated as duplicates; comparison is case-sensitive.
Is the original order kept?
Yes. The first occurrence of each line keeps its position.
Are blank lines counted as duplicates?
Blank lines are treated like any other line, so use Remove Empty Lines if you want them gone.
Related tools
Remove Empty Lines
Strip blank and whitespace-only lines from text instantly.
Remove Extra Spaces
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Text Comparison
Compare two blocks of text and highlight the differences line by line.