Online Code Diff Viewer with Syntax Highlighting — Compare Code Files
Compare two code files side by side with beautiful syntax highlighting for 50+ languages. Spot changes at a glance in a professional unified or split diff view.
Features
50+ Languages
Automatic syntax highlighting for JavaScript, TypeScript, Python, Rust, Go, Java, SQL, YAML, and many more.
Side-by-Side View
See the original and modified code in parallel columns so context is never lost.
Private by Default
Your code stays in your browser. Nothing is sent to any server.
How It Works
Enter the original version of your code in the left panel.
Enter the new version of your code in the right panel.
Choose the programming language for accurate syntax highlighting.
Changed lines are highlighted. Added lines appear in green, removed lines in red.
Frequently Asked Questions
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