What Is the AI Code Reviewer?
The AI Code Reviewer is a free tool that analyzes your code for bugs, performance issues, and best practice violations. Paste code in any programming language — JavaScript, Python, Java, Go, C++, TypeScript, and more — and get instant, actionable feedback along with a quality score from 0 to 100.
Think of it as a senior developer reviewing your pull request, available 24/7 and with zero judgment.
How It Works
Paste your code snippet, choose a review focus (or leave it on "All" for a comprehensive review), and hit the button. The AI examines your code for common pitfalls, potential bugs, performance bottlenecks, and deviations from industry best practices, then delivers a structured review with a numeric score.
What the Score Means
90-100: Excellent
Clean, well-structured code with minimal or no issues. Production-ready quality.
70-89: Good
Solid code with minor improvements suggested. A few optimizations or style tweaks recommended.
50-69: Needs Work
Several issues found — potential bugs, missing error handling, or performance concerns that should be addressed.
Below 50: Major Issues
Significant problems detected. Likely bugs, security concerns, or fundamental design issues.
Best Uses for AI Code Review
- Pre-PR check: review your code before submitting a pull request
- Learning tool: understand why certain patterns are preferred
- Quick debugging: catch off-by-one errors and null references fast
- Interview prep: practice writing clean code and learn from feedback