HTTP Header Inspector
Browse and learn about common HTTP request and response headers. Essential for web security, caching, and API development.
Cache-Control
Directives for caching mechanisms in both browsers and shared caches.
Content-Type
Indicates the media type of the resource.
Authorization
Contains the credentials to authenticate a user agent with a server.
User-Agent
Contains a characteristic string that allows network protocol peers to identify the application.
Access-Control-Allow-Origin
Indicates whether the response can be shared with resources from the given origin.
X-Frame-Options
Indicates whether a browser should be allowed to render a page in a frame or iframe.
Did you know?
HTTP headers allow the client and the server to pass additional information with an HTTP request or response. Security headers like Content-Security-Policy are critical in preventing modern web attacks.