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Remove Duplicate/Empty Lines
Remove Duplicate/Empty Lines
What is this tool?
A simple text-cleaning utility that removes duplicate lines and empty lines from any block of text you paste in. It's built for quickly tidying lists that have grown messy from copy-pasting, merging files, or exporting data.
When to use it
- Cleaning a list of email addresses before a mail merge
- Deduplicating a list of URLs, keywords, or file names
- Removing blank lines left over from exporting or merging text files
- Tidying a list before importing it into a spreadsheet or database
- Preparing a word list or dataset for further processing
How to use it
- 1Open the Remove Duplicate/Empty Lines tool.
- 2Paste your list or text block into the input box.
- 3The tool removes duplicate lines and blank lines automatically.
- 4Review the cleaned output.
- 5Copy the result or download it for use elsewhere.
Frequently asked questions
Does it treat "Example.com" and "example.com" as duplicates?
Matching is based on exact line content, so differences in capitalization may result in both lines being kept unless you clean casing separately.
Will it remove lines with only spaces on them?
Yes, lines that are empty or contain only whitespace are treated as blank and removed.
Is there a limit to how much text I can paste in?
There's no fixed limit, but very large inputs may take longer since processing happens in your browser.
Does this tool upload my list anywhere?
No, all processing happens locally in your browser and nothing is sent to a server.
Can I use this for a list of keywords instead of email addresses?
Yes, it works on any line-based text, including keyword lists, URLs, or file names.