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HTTP Headers Viewer
View HTTP headers for any URL.
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Enter a URL to view its HTTP response headers
Quick Examples
About HTTP Headers
HTTP headers allow the client and server to pass additional information with an HTTP request or response. They define the operating parameters of an HTTP transaction.
Common Response Headers
- Content-Type - Media type of the body
- Cache-Control - Caching directives
- Set-Cookie - Set cookies on client
- Content-Security-Policy - Security rules
Security Headers
- Strict-Transport-Security - Force HTTPS
- X-Frame-Options - Prevent clickjacking
- X-Content-Type-Options - MIME sniffing
- Referrer-Policy - Control referrer info
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