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Diff Checker - Compare Text & Code Differences

Compare two text inputs and see differences highlighted. Side-by-side and inline views with options to ignore whitespace and case.

Original Text

Modified Text

👁️ Visual Comparison

See differences highlighted in color. Green for additions, red for removals. Choose between side-by-side or inline views.

⚙️ Smart Options

Ignore whitespace differences or case sensitivity. Focus on the changes that matter to you.

📊 Statistics

View detailed statistics showing lines added, removed, and unchanged. Perfect for code reviews.

Free Online Diff Checker Tool

Compare two text inputs and identify differences with our free online diff checker. Perfect for comparing code versions, configuration files, or any text content. All processing happens locally in your browser for privacy.

What is a Diff?

A diff (short for difference) shows the changes between two versions of text or code. It highlights additions, deletions, and modifications, making it easy to see what changed between versions. Diff tools are essential for code reviews, version control, and debugging.

Use Cases

  • Compare code before and after refactoring
  • Review changes in configuration files
  • Identify differences between document versions
  • Debug issues by comparing working vs broken code
  • Verify merge conflicts resolution
  • Compare API responses or JSON data

View Modes

  • Side by Side: View original and modified text in parallel columns for easy comparison
  • Inline: View all changes in a single column with additions and deletions marked

Color Coding

  • Green: Lines added in the modified version
  • Red: Lines removed from the original version
  • White: Lines that remain unchanged