Examples

CSP Examples Cookbook: Copy-Paste Security Headers Content Security Policy (CSP) is still one of the highest-impact browser defenses you can deploy in 2026. A good CSP reduces XSS risk, limits third-party script abuse, narrows data exfiltration paths, and makes supply-chain mistakes less catastrophic. The hard part is not the syntax. The hard part is shipping a policy that matches your stack. This cookbook gives you complete, copy-paste-ready CSP examples for common servers, frameworks, hosting platforms, and integrations. Each example is short, practical, and designed to be adapted with minimal changes. ...

The hardest part of implementing CSP isn’t understanding the directives — it’s figuring out which domains to whitelist for every third-party service your site uses. Each one needs specific domains in specific directives, and the documentation is scattered across different sites. I’ve spent way too much time hunting down the exact domains for various services. Here’s everything in one place. These are tested, copy-paste ready, and include the domains most people miss. ...