How to Compare Code Online - Complete Tutorial

Why Choose code-info.com?

code-info.com is a powerful online code comparison tool supporting syntax highlighting for 80+ programming languages. Unlike traditional diff tools, we use the same Monaco editor engine that powers Visual Studio Code, providing a professional-grade code comparison experience.

Get Started Now

Visit code-info.com, and you'll see two editors side by side. Paste your original code in the left editor (A) and modified code in the right editor (B), differences will be automatically highlighted. It's that simple!

Core Features

1. Support for 80+ Programming Languages

Whether you use JavaScript, Python, Java, Go, Rust, TypeScript, C++, or any other language, we've got you covered! Click the language dropdown to select your code language, and the tool will automatically apply appropriate syntax highlighting.

2. Real-Time Diff Display

As you paste or type code, differences are automatically highlighted. Added content appears in green, deleted content in red, and modifications are clearly marked.

3. Quick Navigation

Use the "Previous Diff" and "Next Diff" buttons in the toolbar to quickly jump to each modification. For large file comparisons, this feature saves significant time.

Advanced Tips

Swap A/B

Made a mistake? No problem! Click the "Swap A/B" button to quickly switch the content of the left and right editors.

Export Results

Once comparison is complete, use "Copy Result" or "Download Result" to save the comparison results. Easily share with your team or save locally.

Fullscreen Mode

Click the fullscreen button for a larger editing area, ideal for comparing large files. Focus on your work without distractions.

Privacy & Security

All code comparison happens in your browser - nothing is uploaded to servers. Your code remains private and secure. This is our most important commitment to you.

Use Cases

• Code Review: Quickly review code changes from colleagues
• Version Comparison: Compare differences between code versions
• Learning & Debugging: Understand the impact of code changes
• Documentation Comparison: Compare config files or scripts

Start Using It Now!

code-info.com is completely free. Visit code-info.com now and experience the most professional online code comparison tool!