Free JavaScript code security & vulnerability checker

Scan your JavaScript code for security issues, and get AI-powered fix suggestions in-line in your IDE.

Try Snyk’s free JavaScript code checker. No credit card required.

Find and fix JavaScript vulnerabilities as you develop

Snyk’s static analysis scanner checks your JavaScript code for vulnerabilities and security issues in real-time and provides AI-powered fix suggestions in your IDE.

Integrated into your IDE

Scan your code and get fix advice in your favorite IDEs, including JetBrains, Eclipse, and VS Code.

Real-time scan results

Snyk automatically scans your projects for vulnerabilities and provides CVE analysis.

Fix quickly and move on

Apply in-line, AI-powered fix advice right from your IDE, so you can fix quickly and get back to coding.


Check your code in your IDE, Git repo, and CI/CD

Catch (and fix) JavaScript code quality and security issues at every stage.


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