Remove Duplicate Lines
Cleaning up email lists, keyword lists, or exported data often means removing repeated lines by hand. This tool scans your text and keeps only the first occurrence of each line, with options to ignore case and trim stray whitespace.
How to Use This Tool
- Paste your list into the input box, one item per line.
- Choose whether capitalization differences should count as duplicates.
- Click Remove Duplicates to generate the cleaned list.
- Copy the result or select it manually.
Why Use ToolVigo's Remove Duplicate Lines
- Keeps the first occurrence of each unique line, in original order.
- Optional case-insensitive matching.
- Automatically skips blank lines.
Privacy & Security
This tool runs entirely in your browser. Your input is never uploaded to ToolVigo's servers, and nothing is stored once you leave the page.
Frequently Asked Questions
Does this tool change the order of my list?
No — unique lines are kept in the order they first appeared in the original text.
What happens to blank lines?
Blank lines are removed automatically and not counted as duplicates.
Will "Apple" and "apple" be treated as duplicates?
Only if you check "Treat different capitalization as duplicate." Otherwise they are kept as separate lines.