Free Online Tool

Text Diff Checker

Compare two texts side-by-side and instantly find all differences. Perfect for code review, document comparison, and content editing.

Lightning Fast
100% Secure
Works Everywhere
1 lines, 0 words, 0 characters
1 lines, 0 words, 0 characters
Comparison Options

Advanced Text & Code Diff Checker

Compare text, code, or documents with syntax highlighting for 20+ programming languages. Perfect for code reviews, document versioning, and content comparison.

JavaScriptPythonTypeScriptJavaC++And 15+ more...

Syntax Highlighting

Automatic language detection and beautiful syntax highlighting for 20+ languages.

Smart Comparison

Compare by lines, words, or characters with options to ignore case and whitespace.

Multiple Views

Split view for side-by-side comparison or unified view for inline differences.

Export & Share

Download detailed reports with statistics and highlighted differences.

Professional Text Difference Checker - Compare Files & Documents Online

Our advanced text diff checker is the ultimate tool for comparing any two pieces of text, whether you're reviewing code changes, comparing document versions, or checking content edits. With support for line-by-line, word-by-word, and character-by-character comparisons, you'll never miss a single change.

Key Features of Our Text Comparison Tool

  • Multiple Diff Modes: Compare by lines, words, or individual characters
  • Dual View Options: Choose between side-by-side split view or unified diff view
  • Smart Comparison: Ignore case and whitespace differences when needed
  • File Upload Support: Upload text files directly for comparison
  • Detailed Statistics: See similarity percentage and change counts
  • Export Functionality: Download detailed difference reports
  • Line Numbers: Optional line number display for easy reference
  • Real-time Updates: See differences instantly as you type

Perfect for Developers and Writers

Whether you're a developer comparing code versions, a writer tracking document changes, or a content editor reviewing modifications, our text diff checker provides the precision and clarity you need. The tool handles everything from small snippets to large files with ease.

Common Use Cases

For Developers

  • • Code review and pull request analysis
  • • Configuration file comparison
  • • Debug log analysis
  • • API response comparison
  • • Database schema changes

For Content Creators

  • • Document version comparison
  • • Content editing and proofreading
  • • Translation verification
  • • Legal document review
  • • Academic paper revisions

Why Choose Our Text Diff Checker?

Unlike other online diff tools, ours combines powerful features with a clean, intuitive interface. No registration required, no file size limits, and completely free to use. The tool works entirely in your browser, ensuring your data privacy and security - nothing is uploaded to our servers.

Pro Tip: Use keyboard shortcuts for faster comparison - Ctrl+V to paste, Ctrl+A to select all, and use Tab to switch between text areas. Enable "Ignore Whitespace" when comparing code that may have different formatting.

Related Tools You Might Like

Discover more powerful tools to boost your productivity

Browse All Tools

Frequently Asked Questions

What is a text diff checker?

A text diff checker is a tool that compares two pieces of text and highlights the differences between them. It shows what has been added, removed, or changed, making it easy to spot variations between documents, code files, or any text content.

How accurate is the comparison?

Our text diff checker uses industry-standard algorithms to ensure 100% accuracy in detecting differences. Every character, word, and line change is identified and highlighted appropriately.

Can I compare large files?

Yes! Our tool can handle large text files efficiently. Since all processing happens in your browser, the only limitation is your device's memory, which typically allows for files with hundreds of thousands of lines.

Is my data secure?

Absolutely! All text comparison happens locally in your browser. No data is sent to our servers, ensuring complete privacy and security of your sensitive documents or code.

What's the difference between the comparison modes?

Line mode compares entire lines (best for code and structured text),Word mode compares individual words (ideal for prose and documents), and Character mode compares every character (perfect for finding tiny changes).