From an address to a page
Frontend & browsers
Start with the address in your browser. Learn which part names the host, which part asks for a resource, and which part stays out of the HTTP request.
- concept
URL structure
Read a web address, one part at a time. Learn what reaches the server—and why the fragment is different.
Explore the idea - concept
HTTP cookies
An HTTP cookie is a small name/value state item delivered in `Set-Cookie` and potentially returned in later `Cookie` request headers.
Explore the idea
Reading a URL is a useful first step when a link opens the wrong page or a change appears to do nothing. The URL explorer below separates those jobs without making a network request.