Line Counter & Line ToolsCount total, empty and unique lines, then add line numbers, sort alphabetically, reverse or shuffle lines.
Remove Duplicate Lines
Paste a list of emails, keywords, URLs or names and get each entry only once. The first occurrence is kept, so the order of your list does not change unless you ask it to.
Runs entirely in your browser. Your input and files are not uploaded to any server.
How to use
- Paste your list, one item per line.
- Choose whether “Apple” and “apple” count as the same, and whether to ignore surrounding spaces.
- Copy or download the unique lines. The summary shows how many duplicates were removed.
Examples
Keyword list
“seo tools / SEO Tools / seo tools ” becomes one line with case-insensitive matching and trimming on.
URL list
Keep case-sensitive matching on because URL paths can be case-sensitive.
Privacy
Your files and text stay in your browser while you use this tool, and ads or anonymous visit statistics do not receive them. Only your favorites and recent tools are saved on your device. Privacy policy
Want proof? Check it with your browser’s Network tab: How to check that a tool does not upload your files
Frequently asked questions
Which copy is kept?
The first occurrence. Later duplicates are removed.
Can it remove all lines that appear more than once?
Yes. Choose “Only lines that appear once” to drop every line that has a duplicate.
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