Doitberry.

Remove Duplicate Lines

Remove repeated lines while keeping the first occurrence, with optional case-sensitive matching.

Processed in your browser — your text is not uploaded.

Removed 1 duplicate line.

When to use Remove Duplicate Lines

Useful for cleaning copied lists, IDs, keywords, names, or any line-oriented text with repeats.

How to use Remove Duplicate Lines

Set the inputs that matter for this task, run the tool, then copy or reuse the result when the page offers that action. Inputs stay visible so you can adjust them and run the tool again without starting over.

Browser-local text processing

Your working text is processed in this browser session and is not sent to a Doitberry backend by the tool.

Related tools

Sort LinesSort line-based text ascending or descending, with case-sensitive and numeric options.Line CounterCount total lines, non-empty lines, and blank lines in pasted text.Text CleanerPreview and apply explicit text cleanup operations without silently changing the original.