Text Diff Checker Online

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Text Diff

Compare two texts and highlight differences

Enter text to see differences

How to use Text Diff?

  1. Paste or enter your data in the input box.
  2. Click the action button to process.
  3. View the result and copy or download it.

Features

  • ✓ Runs entirely in browser, data never leaves your device
  • ✓ Free to use, no login required
  • ✓ Lightning fast processing
  • ✓ One-click copy/download support

FAQ

Is this tool free?↓
Yes, completely free! No registration required to use all features.
Is my data safe?↓
Absolutely. All processing happens locally in your browser — your data is never sent to any server.

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Site Map

What is Diff?

A text diff checker is a practical tool for comparing differences between two pieces of text. It helps you quickly identify additions, deletions, and modifications between two texts, and is widely used in code review, document version comparison, content auditing, and more. Our text comparison tool offers both line-by-line and word-by-word comparison modes, with highlighted differences in vivid colors.

How to Use

  1. Paste the original text in the left input field.
  2. Paste the modified text in the right input field.
  3. Click "Compare" and the tool will automatically analyze and display differences.
  4. Added content will be highlighted in green, and deleted content in red.
  5. Switch between "Line-by-line" and "Word-by-word" modes for different viewing effects.

Features

  • ✓ Line-by-Line Comparison
  • ✓ Word-by-Word Comparison
  • ✓ Difference Highlighting
  • ✓ Added Content Markers
  • ✓ Deleted Content Markers
  • ✓ Large Text Support
  • ✓ One-Click Clear
  • ✓ Free, No Signup

FAQ

What is text diff?

Text diff refers to comparing differences between two pieces of text and highlighting the added, deleted, and modified parts. It is commonly used in code review, document version comparison, and more.

What is the difference between line-by-line and word-by-word comparison?

Line-by-line comparison shows differences by line, suitable for viewing changes in large text blocks. Word-by-word comparison shows differences by word, suitable for viewing precise text changes.

Do I need to sign up to use this tool?

No! Our text diff checker is completely free with no signup or login required.

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