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Text Diff Checker

Compare two texts side-by-side and instantly see the differences. Highlight additions, deletions, and changes with complete privacy.

Added: 0
Removed: 0
Modified: 0
Unchanged: 0
Diff Result
📝

Enter two texts above and click "Compare Texts" to see the differences.

💡 How to Use This Tool

Compare two texts and find the differences. Follow these simple steps:

1

Enter Original Text

Paste or type the original version of your text.

2

Enter Modified Text

Paste or type the modified version to compare.

3

Compare Texts

Click "Compare Texts" to generate the diff.

4

Review Differences

Additions are green, deletions are red.

📖 About Text Diff Checker

What is a Text Diff Checker?

A text diff checker (or text comparison tool) analyzes two pieces of text and highlights the differences between them. It shows what was added, removed, or changed.

How Diff Checking Works

Line-by-Line Comparison

The tool compares text line by line, identifying which lines exist only in the original, only in the modified version, or in both.

Change Highlighting

  • Green/Added: Lines that appear only in the second text
  • Red/Removed: Lines that appear only in the first text
  • Unchanged: Lines that are identical in both texts

Common Use Cases

  • Code Review: Compare code versions to see what changed
  • Document Editing: Track changes between document revisions
  • Content Writing: Compare draft versions of articles
  • Configuration Files: Identify differences in config files
  • Legal Documents: Compare contract versions

Privacy & Security

This tool runs entirely in your browser using JavaScript. No text is sent to any server—your content stays completely private and secure on your device.

❓ Frequently Asked Questions

Yes! All text comparison happens locally in your browser using JavaScript. Your text never leaves your device and is not sent to any server.
The tool compares your texts line by line, identifying lines that were added (only in text 2), removed (only in text 1), or unchanged (in both texts).
Green highlights show additions (new content in text 2), red highlights show deletions (content removed from text 1), and unmarked lines are unchanged.
Yes! This tool works great for comparing code, configuration files, documents, or any text content.
No limits! Since processing happens in your browser, you can compare texts of any size. Very large texts may take a moment to process.