How does the duplicate line remover work?

Paste your text with duplicate lines, select options (case sensitivity, trim whitespace), and click Remove Duplicates. The tool instantly removes all duplicate lines while preserving the original order. Verify by checking line count decreased.

Does it remove empty lines?

You can choose to keep one empty line or remove all empty lines—options are provided for flexible cleanup. Perfect for cleaning up CSV files, lists, code, and data exports with empty spaces.

Is case sensitivity important?

Yes! Enable "Case Sensitive" to treat "Apple" and "apple" as different lines. Disable it to remove duplicates regardless of case. Verify setting matches your data requirements before processing.

Is my data safe and private?

Yes—all processing happens in your browser so your text never leaves your device. Zero uploads, zero logging. Perfect for processing sensitive data, email lists, and confidential information.

What file formats can I clean?

Works with plain text, CSV, lists, code files, SQL queries, log files, and any line-based data. Paste content directly, process, and copy clean output. Ideal for data cleanup before importing to Excel, databases, or other tools.

Duplicate Line Remover

Remove duplicate lines from a block of text.

4.9(7,654 reviews)

Remove empty lines

Word Counter

Count words and characters in your text.

Text Case Converter

Convert text to UPPERCASE, lowercase, etc.

SIMPLE PROCESS

How It Works

Complete your task in simple, easy-to-follow steps.

STEP 1

Paste Text

Paste your list or text into the input area.

STEP 2

Choose Options

Select options like case sensitivity if needed.

STEP 3

Get Clean Text

Your text is cleaned instantly, ready to be copied.

Why Choose ConvertFreely?

The most powerful online conversion tools, designed with your needs in mind

Lightning Fast

Process files instantly with client-side conversion. No waiting, no queues.

Completely Secure

All processing happens in your browser. Your files never leave your device.

Always Free

No hidden fees, no subscriptions. All tools are 100% free forever.

No Sign-up Required

Start converting immediately. No accounts, no registrations needed.

Unlimited Usage

No daily limits or file size restrictions. Convert as much as you need.

Works Everywhere

Access from any device, any browser. Desktop, tablet, or mobile.

Extend Your Tools

Seamlessly access all conversion and optimization tools directly from your browser. Work faster, smarter, and more efficiently.

One-click access to all 30+ conversion tools

Convert files without leaving your current webpage

Completely free, no subscription required

Comming Soon

ConvertFreely

Browser Extension for instant file conversion