Text Case Converter
Convert text to uppercase, lowercase, title case or sentence case instantly.
Text
Remove Duplicate Lines Online
Remove repeated lines from lists and text locally while preserving the first occurrence order.
Your input is processed only as required by this tool.
Remove Duplicate Lines Online
Duplicate-line removal is useful for email lists, IDs, keywords, logs and copied datasets. This tool walks the text from top to bottom, keeps the first occurrence of each line and removes later duplicates without sending the list to a server.
How to use it
- Enter the values required by the tool.
- Run the calculation or transformation locally in your browser.
- Review and copy the result; your input is not uploaded to the Ciatto Tools API.
How to read the result
Enable case-sensitive matching when `Example` and `example` should remain different entries. Disable it when capitalization should not create separate values.
Limitations
The tool compares full lines and does not trim or normalize whitespace before matching. Values that differ only because of spaces therefore remain distinct unless cleaned first.
Frequently asked questions
Does it preserve the original order?
Yes. The first occurrence stays in place and only later duplicates are removed.
Can matching ignore uppercase and lowercase?
Yes. Disable case-sensitive matching to treat differently capitalized lines as duplicates.