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Text Diff Checker

Compare two texts and highlight added, removed, and unchanged words or lines. Fast, free, and completely private.

Text Diff Checker

Compare two texts and highlight the differences.

Compare Text
Paste original and changed text to see what was added, removed, or unchanged.
User text is rendered as React text nodes, never as raw HTML.
0 / 1,048,576 characters
0 / 1,048,576 characters
Diff Result
Visual differences and summary stats will appear here
Paste both versions above and compare them.
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How to use Text Diff Checker

1

Paste Input

Paste your text, code, data, or values into the editor above.

2

Choose Options

Adjust any formatting, conversion, or processing options for your task.

3

Copy or Download Result

Copy the result or download it when an export option is available.

Key Features

  • Lightning Fast: Results are generated almost instantly using state-of-the-art tech.
  • 100% Free: No hidden costs, no premium tiers, and no subscriptions required.
  • No Registration: Start using the tool immediately without providing an email address.
  • Secure & Private: Files are processed locally or deleted immediately from our secure servers.

Frequently Asked Questions

Is this text diff checker free?

Yes, you can compare two texts and review differences completely for free.

What is a text diff?

A text diff compares two versions of text and shows what stayed the same, what was added, and what was removed.

Can I compare two paragraphs?

Yes, paste the original paragraph and changed paragraph to compare them word by word or line by line.

Can I compare two documents?

Yes, you can paste text copied from two documents as long as each input is under 1MB.

Can I compare line by line?

Yes, choose Line mode to compare code snippets, logs, lists, config files, or multiline text.

Can I compare word by word?

Yes, Word mode is the default and is best for paragraphs, copywriting, messages, and documentation.

What does added text mean?

Added text means content that appears in the changed version but not in the original.

What does removed text mean?

Removed text means content that existed in the original but not in the changed version.

Are my texts stored?

Toolkit does not store your text permanently.

Does this work on mobile?

Yes, the Text Diff Checker works on mobile, tablet, and desktop devices.