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Astro CSP headers CloudFlare Integration

October 20, 2025 · 9 min read

Enrico Hochkoeppler

Enrico Hochkoeppler

Web Developer & TutoriaLibre Founder

In today's web landscape, security is paramount. Content Security Policy (CSP) is a crucial layer of defense against cross-site scripting (XSS) and other content injection attacks. For Astro projects deployed on Cloudflare, we can leverage Cloudflare's _headers file to define static CSP headers, ensuring a robust security posture from the get-go.

This article will guide you through creating a custom Astro integration that automatically generates these static CSP headers, including hashes for inline scripts and styles, for your Cloudflare deployments.

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