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DevOps & Security

7 free browser-based tools

Env, Compose, cron, CSP, CORS, package and certificate inspection

All DevOps & Security

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Validate .env files for duplicate keys, empty values, unsafe names and expansion hints.

Best-effort local Compose YAML checks for services, images, builds, ports and risky settings.

Validate cron syntax and preview readable schedule parts for jobs and automations.

Analyze Content Security Policy directives and flag unsafe-inline, unsafe-eval and missing defaults.

Best-effort local PEM certificate inspection for subject, issuer and validity fields when visible.

Inspect package.json scripts, dependencies, engines and package naming issues.

Inspect CORS response headers for wildcard origins, credentials and preflight readiness.