Developer
CSP Validator
Validate Content Security Policy rules and identify configuration errors.
Tool
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About this Tool
Use this free CSP validator to analyze Content Security Policy rules, detect syntax issues and review potentially unsafe directives before deployment.
Examples
- default-src 'self'
- script-src 'unsafe-inline' *
- default-src 'self'; img-src https:
Frequently Asked Questions
What does a CSP validator do?
It checks Content Security Policy directives for syntax errors and insecure configurations.
Can unsafe directives be detected?
Yes. Common issues such as wildcard sources and unsafe-inline directives can be highlighted.
Should CSP be tested before deployment?
Yes. Validating CSP rules helps prevent broken websites and security weaknesses.