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Keep the first occurrence of each exact line and remove later duplicates.
Open the guide when you need step-by-step help or a sample. The live workspace stays first.
Enter Plain text in the workspace or use the available Load Data options.
Run Remove Duplicate Lines. Adjust the available settings first when needed.
Review Unique lines, Errors. Resolve any reported errors before using the result.
Continue with Copy, Download, Share.
Example input: Plain text
json xml json yaml xml csv
Result in the live workspace
Run Remove Duplicate Lines in the live workspace above to generate the result. Review it in Unique lines, Errors.
Go to the live workspaceSetup notes, privacy details, and examples when needed.
Line order is preserved and comparisons are exact, including letter case.
A few closely related tools stay linked here without turning the page into a directory.