Instantly detect syntax errors, logic bugs, security vulnerabilities, and performance issues in your code — across 18+ programming languages. Powered by Claude AI.
Paste your code on the left
and click Analyse Code
or press Ctrl+Enter
Our AI code error checker makes debugging faster than ever. No installation, no sign-up — just paste, click, and fix.
Copy your code from any editor — VS Code, IntelliJ, PyCharm, or anywhere else — and paste it into the input panel. Select your language or let AI auto-detect it.
Hit "Analyse Code" or press Ctrl+Enter. Our AI instantly scans for syntax errors, logic bugs, security vulnerabilities, performance issues, and best-practice violations.
Each issue comes with a clear description and a suggested fix. The tool also generates a fully corrected version of your code — ready to copy and use.
Whether you're building web apps, mobile apps, backend APIs, or data pipelines — our code checker has you covered across all popular programming languages.
Built for developers, freelancers, students, and agencies — our tool goes beyond basic linting to deliver AI-level code intelligence.
Catch every missing semicolon, unclosed bracket, mismatched quote, and declaration error before it crashes your app.
Our AI identifies flawed conditionals, infinite loops, incorrect variable scoping, and off-by-one errors that normal linters miss.
Detect SQL injection risks, XSS vulnerabilities, hardcoded credentials, insecure dependencies, and OWASP top-10 issues.
Get actionable suggestions to reduce time complexity, eliminate redundant computations, and improve memory usage in your code.
Don't just see what's wrong — get a clean, fixed version of your entire file ready to copy and drop back into your project.
100% browser-based. No installation, no account, no IDE plugin needed. Works on any device, any OS, instantly.
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