Remove Duplicate Lines

Remove duplicate lines from any list or text while keeping the first occurrence and the original order. Ideal for cleaning up lists, logs, emails, and exported data. Options for case sensitivity and trimming whitespace before comparing.

Built for remove duplicate lines workflows and closely related tasks like delete duplicate lines.

Enter text or list

32 chars5 words

Options

Case sensitive

Ignore leading/trailing spaces

Deduplicated linesLive preview

apple banana cherry

Ctrl+Enter to copy | Ctrl+Z to undo

Example usage

Example input

apple banana apple cherry banana

Example output

apple banana cherry

Batch Processing

Enter multiple inputs, one per line. Each line will be processed separately.

Input (one per line)

Results

Why this tool?

All tools run entirely in your browser no uploads, no tracking.. All processing happens in your browser so no text ever leaves your device.

Quick tips

•Outputs update live as you type.
•Use the sticky copy button to grab results quickly.
•Bookmark this page for fast access.

cleanup cluster

Explore the full tool family, supporting guides, and priority pages around this workflow.

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How it works

Paste your text or list with one item per line.
Each line is compared and repeats are removed, keeping the first occurrence.
Use the options to ignore case or surrounding spaces when comparing.

Use cases

Clean duplicate entries from lists and exports.

Deduplicate email lists, keywords, and tags.

Tidy log files and pasted data.

Prepare unique lists before importing or sorting.

Cleanup

Explore all text cleanup tools

Jump back to the cluster hub to browse the full tool family, the strongest money pages, and the supporting guides tied to this workflow.

Browse Cleanup

Related tools in this cluster

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Text Splitter

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Whitespace Remover

Remove all spaces, tabs, and line breaks from text instantly. This whitespace remover is useful for cleaning IDs, code snippets, and compact data values.

Supporting guides

How to Remove Line Breaks Without Removing Spaces

A practical workflow for flattening copied text into one readable line without joining words together or breaking punctuation.

Line Break Remover for Word, Notes, and Email

Learn when to remove line breaks, when to keep line structure, and how to clean copied text from Word, notes apps, and email.

Conversion History

FAQ

How is this different from removing duplicate words?

This tool compares whole lines, not individual words. It keeps the first time a line appears and removes any later exact repeats.

Does it keep the original order?

Yes. Lines stay in their original order, and only later duplicates are removed. Use Sort Lines first if you also want them sorted.

Can it ignore case and spacing?

Yes. Turn on the options to treat differently-cased lines as the same and to ignore leading or trailing spaces when comparing.