HTTP Response Headers
The HTTP Response Headers reference explains the headers servers send back, from caching and content type to security policies.
Key Features
- Common header catalog
- Security header notes
- Caching directives
- Local reference
- Searchable
Use Cases
- Tune browser caching
- Set security headers
- Debug a download
- Teach HTTP
How to Use
- Pick a header
- Read its meaning
- Apply it to your server
Practical Tips
- Cache-Control beats Expires
- CSP reduces XSS risk
- Content-Type prevents sniffing
FAQ
- Cache-Control?
- Controls how and how long responses are cached.
- Which security headers?
- CSP, HSTS, X-Content-Type-Options first.