Remove duplicate lines

Deduplicate text instantly. Sort, trim, and configure case sensitivity in your browser.

100% Private Processed locally Free & unlimited

Remove Duplicates

Enter Your Text

Options

Sort alphabetically
Arrange unique lines in A-Z order
Case-sensitive
Treat Hello and hello as different lines
Trim whitespace
Remove leading and trailing spaces

Duplicate Removal Complete

Paste your text and click Remove Duplicates to begin.

Duplicate Removal Summary

Original Lines
0
Unique Lines
0
Duplicates Removed
0
Duplicate %
0%
Processing Time
<1 ms
Detection Mode
Exact Line Match
Order
Preserved
Case Comparison
Insensitive
Whitespace Handling
Trimmed
Duplicate Detection

This tool removes only identical duplicate lines. Repeated words inside a single line are intentionally preserved. The wording and formatting of remaining lines are never modified.

Original Text

Original Text

Unique Lines

Unique Lines
What this tool does not do
  • Remove repeated words inside a sentence.
  • Fix grammar or spelling mistakes.
  • Rewrite or rephrase your text.
  • Merge similar (but not identical) lines.
  • Detect nearly identical sentences.

What this tool does not do

  • Remove repeated words inside a sentence.
  • Fix grammar or spelling mistakes.
  • Rewrite or rephrase your text.
  • Merge similar (but not identical) lines.
  • Detect nearly identical sentences.

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How It Works

1

Paste your text

Enter text with one item per line.

2

Choose options

Set sorting, case sensitivity, and trim preferences.

3

Get unique lines

Copy or download the deduplicated result.

Frequently Asked Questions

How does it work?

Paste your text, configure options, and click Remove Duplicates. Only the first occurrence of each line is kept.

Can I sort alphabetically?

Yes. Enable the Sort alphabetically option before processing.

Is case sensitivity supported?

Yes. By default it is case-insensitive. Enable Case-sensitive to treat different cases as unique.

Is my text uploaded?

No. All processing happens entirely in your browser. Your text never leaves your device.

What is the maximum input size?

500 KB of text per operation.

Is GoToolly free?

Yes. No account, no limits, no payment.

Read Guide: Remove Duplicate Lines ➜