While there are almost 40 registered HTTP request methods, most RESTful web developers only use five of them. Here are the most important HTTP methods and examples of how to use them.

What does HTTP header actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

Do you understand how HTTP protocol works and the impact it has on crawling and indexing web pages? No? Here's a guide written by Contributor Barry Adams on HTTP status codes and headers that will ...

HTTP headers contain data stored as name/value pairs that are passed between the server and the client. These headers are passed along with the request or the response. The Save-Data header is a ...

The second request includes an If-None-Match: header containing that ETag value. If this value matches the ETag that would have been returned, the server returns a 304 Page Not Modified header.