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AI Code Reviewer

Paste code for instant static analysis. Detects security issues, performance smells, style violations, and best practice gaps — all in your browser, no API needed.

✓ Security issue detection ✓ Performance smell analysis ✓ Best practice checklist

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Frequently Asked Questions

What heuristics does this tool check?▼

The tool runs static pattern analysis across four categories: Security Issues (hardcoded secrets, SQL injection risks, eval usage, XSS vectors), Performance Smells (nested loops, synchronous file I/O, missing memoization), Style Issues (magic numbers, overly long functions, commented-out code), and Best Practices (missing error handling, console.log in production, unhandled promises).

Does this send my code anywhere?▼

No. All analysis runs entirely in your browser using JavaScript pattern matching. Your code never leaves your device. This tool uses regex heuristics, not an LLM — it's instant and private.

Can this replace a real code review?▼

No. This tool catches common patterns but misses context-dependent issues, logic errors, and architectural problems. Use it as a first-pass sanity check before human or AI review. For AI-assisted review, combine with tools like GitHub Copilot Code Review, CodeRabbit, or Claude/ChatGPT with your full codebase context.

What languages does it support?▼

The heuristics are language-agnostic and work best on JavaScript, TypeScript, Python, and similar scripting languages. Some checks (SQL injection, XSS) are web-specific. The tool highlights patterns to investigate — always verify findings in context of your actual language and framework.

How are severity levels determined?▼

Critical: issues that likely represent exploitable security vulnerabilities (hardcoded secrets, eval with user input). High: patterns that frequently cause bugs or security issues in production. Medium: code quality issues that make maintenance harder. Low: style preferences and minor improvements. Severity is heuristic — use judgment.

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