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Tool reference

Remove Duplicate Lines: instructions, examples and limits

Keeps the first occurrence of each exact, case-sensitive line.

Open Remove Duplicate Lines
Processing location: your browser

This tool is registered for local processing. Its tool input is handled in the current page; LittleKit’s product analytics do not include the input value.

What it does

Keeps the first occurrence of each exact, case-sensitive line.

Worked example

apple / pear / apple → apple / pear.

The example demonstrates the operation. For file-based tools, results depend on the selected file and options.

How the result is produced

Keeps the first occurrence of each exact, case-sensitive line.

Important limits

Text stays in this tab. Maximum 100,000 characters. Word and sentence boundaries are estimates; language and punctuation can change counts.

Choosing the next step

Pick the narrowest operation that matches the problem. A line tool preserves line boundaries, while a text-wide transform may change punctuation or spacing. For sensitive text, use the browser-local workflow and avoid putting the input into a share URL.

Word CounterCounts Unicode letter/number sequences, keeping internal apostrophes and hyphens together.Case ConverterChanges the capitalization of your text using the selected rule.Remove Extra SpacesTrims each line and collapses horizontal whitespace; keeps line breaks.

See a mismatch between these instructions and the tool? Report a correction with a non-sensitive example.