Free AI Code Checker

CodeConvert AI's code checker uses advanced large language models to analyze your code for bugs, performance issues, readability problems, and best-practice violations. Simply paste your code, select the programming language, and click Check Code. You'll get a detailed report of issues found along with corrected code in seconds.

Our code checker supports over 50 programming languages including Python, JavaScript, TypeScript, Java, C++, C#, Go, Rust, Ruby, PHP, Swift, Kotlin, R, Lua, and many more.

Yes. You can use the free code checker without creating an account for up to 5 checks per day. For higher limits and additional features, you can sign up for a Pro account.

Traditional linters check for syntax errors and basic style violations based on predefined rules. This AI code checker goes much further — it understands your code's logic and can find semantic bugs, suggest performance optimizations, identify security concerns, and explain issues in plain English. It also provides corrected code, not just error messages.

Yes. In addition to identifying issues, the tool provides a corrected version of your code with all fixes applied. Each issue is explained with a severity level and a code snippet showing the fix, so you can understand what changed and why.

No. You can use the free code checker without signing up or creating an account for up to 5 checks per day. Just paste your code, select the language, and click Check Code.

Yes! CodeConvert AI offers a full suite of free tools. You can convert code between 50+ languages with the Code Converter, generate code from plain-English descriptions with the Code Generator, or get step-by-step explanations with the Code Explainer. Try the Code Explainer

Signing in unlocks CodeConvert AI's Pro tool, which includes more powerful AI models, an integrated chat assistant, code execution, personal notes, conversion history, and an enhanced interface. Every account gets 5 free credits per day to explore the full Pro experience.