UMARIX Text ToolsDuplicate Line Remover
Paste a list with repeated lines and remove the duplicates in one click. This is ideal for email lists, keyword lists, product codes, and names copied from spreadsheets.
How to Use
- Paste your list, one item per line.
- Choose whether matching should be case-sensitive.
- Click Remove Duplicates.
- Check how many lines were removed.
- Copy the clean list.
Why This Tool Helps
Duplicate entries cause real problems: the same customer gets two emails, a keyword list inflates a report, or a stock list overstates inventory. Sorting a long list by eye misses duplicates that differ only by spacing or capitalization. This tool keeps the first occurrence of each line and removes later repeats, so the original order is preserved. Use case-sensitive mode when Apple and apple should count as different items, and turn it off when they should count as the same item.
Frequently Asked Questions
Does it keep the original order?
Yes. The first occurrence of each line is kept in its original position, and later duplicates are removed.
What does case-sensitive mean?
With case-sensitive matching on, Apple and apple are treated as different lines. With it off, they count as the same line.
Does it remove blank lines too?
Blank lines are ignored in the comparison, and empty lines are dropped from the cleaned list.
Can I use it for email lists?
Yes. Paste one email address per line, remove duplicates, and copy the clean list for your mailing tool.
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