CSP & SEO Guidelines
Balance site security with search engine accessibility.
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CSP & SEO Compatibility
A Content Security Policy (CSP) is vital for defense-in-depth against XSS and injection attacks. However, overly strict policies can block crawling rendering blocks, Google Tag Manager scripts, and dynamic asset domains.
1. How CSP affects search crawlers
Search engine indexers (like Googlebot) render pages with dynamic headless Chrome browsers. If your CSP blocks external resources, fonts, or tracking elements required by the page shell, the crawler may render a broken view, causing indexation failure.
2. Best practices for SEO-friendly CSPs
Always allow official search engine domains inside your security policies. Use nonces or hashes instead of unsafe-inline to ensure safe scripting while allowing search engine analytics and core tracking scripts.
Audit Your Security Headers
Test your CSP configuration and score security header alignment.
Scan HeadersRelated Security Guides
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