What modes does text dedupe support?

Two modes: 1) Remove duplicates — keep only first occurrence of each line; 2) Keep duplicates only — show lines that appear 2+ times. Also supports case-insensitive, skip blank lines, and sorted output.

Is the order preserved?

By default, first-occurrence order is preserved. Check 'Sort output' to arrange alphabetically. Line count stats are shown before and after.

Text Dedupe Tool | Remove Duplicate Lines

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Free online text deduplication tool — remove or extract duplicate lines quickly. Case-insensitive matching, skip blank lines, sorted output. Everything runs locally: Text Dedupe Tool and other values are processed on your device, never sent to a server. 🔒 Client-side · No Sign-up

📋 Options

Ignore case Skip blank lines Sort output

📥 Input

Lines: 0

📤 Output

Lines: 0 | Removed: 0

What is Text Dedupe Tool | Remove Duplicate Lines?

Text Dedupe Tool | Remove Duplicate Lines is a free online tool that runs entirely in your browser. No download or signup needed — enter Text Dedupe Tool and other values to get results instantly. All data is processed locally.

Use Cases

Transform text formatting quickly while editing documents
Count words or change case during content creation
Batch process text during data cleaning tasks
Handle text on mobile without opening a desktop editor

Key Features

Completely Free: No registration, no limits
Privacy Safe: Data never leaves your browser
Cross-Platform: Any modern browser
Zero Dependencies: Open and use

📝 Text Dedupe Tool

What is Text Dedupe Tool | Remove Duplicate Lines?

Use Cases

Key Features

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