Code Diff Viewer & Syntax Highlighter

Multi-language code diff viewer powered by Monaco DiffEditor with side-by-side / inline modes, change statistics, similarity percentage, and unified patch export.

Lines Added
+22
Lines Removed
-8
Unchanged Lines
7
Code Similarity
32%
Original (Left)
Modified (Right)
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Usage Guide

  • 1. Select your programming language (TypeScript, Python, Go, Rust, Java, SQL, JSON, etc.) from the dropdown menu.
  • 2. Paste original code on the left and modified code on the right to inspect token-level syntax differences.
  • 3. Toggle side-by-side or inline view modes, enable 'Ignore Whitespace' to filter formatting diffs, and export unified .patch files.

Security & Privacy Guarantee

  • 1. Powered by the official Monaco DiffEditor engine for accurate language-aware keyword, string, and token highlighting.
  • 2. Calculates line addition/deletion metrics and real-time code similarity percentage scores.
  • 3. In-memory client-side diff comparison; proprietary source code and algorithms are never uploaded to the cloud.

Frequently Asked Questions

Q: How does Code Diff Viewer differ from standard plain-text diff tools?
A: Code Diff Viewer provides syntax-aware token coloring across 14+ languages, intelligent whitespace ignore options, and standard Git-compatible .patch file generation.
Q: How do I ignore indentation and newline discrepancies when reviewing refactored code?
A: Enable the 'Ignore Whitespace' toggle in the top toolbar. The diff engine will automatically overlook leading and trailing whitespace changes, highlighting only genuine logic modifications.
Q: How can I apply the exported .patch file to my local Git repository?
A: Run 'git apply changes.patch' or 'patch -p1 < changes.patch' in the root directory of your local repository to apply the diff cleanly.
Q: Does this tool perform compiler-level AST semantic analysis?
A: No. This tool is a high-performance token- and line-level text difference engine designed for fast visual comparison, rather than compiler semantic analysis.