Understanding  Response Codes

If you have ever clicked on a link and received an error message or been redirected to a different page, then you have encountered a response code. These codes are server messages that indicate how the browser should handle the request. There are different types of response codes, each with its own significance. In this post, we will discuss what response codes are and their importance in website functionality.

What are Response Codes?

Response codes, also known as HTTP status codes, are server messages sent to browsers when a request is made to access a page or resource on a website. Response codes inform the browser of whether the request was successful, redirected or failed.

The 6 Popular Questions about Response Codes

What is the 200 Status Code?

The 200 status code is an indication that the request was successful. A response with this code means that the server has produced a valid response.

What is the 301 Status Code?

The 301 status code indicates that the requested resource has been permanently moved to another location. This helps search engines and browsers to update their links and redirect users accordingly.

What is the 302 Status Code?

The 302 status code indicates that the requested resource has been temporarily moved to another location. This helps search engines and browsers to serve up relevant content for visitors.

What is the 404 Status Code?

The 404 status code means that the requested resource could not be found on the server. This could happen due to wrong URLs, deleted pages, or misconfigured servers.

What is the 503 Status Code?

The 503 status code represents an error message returned when a server cannot handle incoming requests at a given time due to maintenance or overload of web traffic.

Why Are Response Codes Important?

Response codes play an essential role in communicating between servers and browsers. These codes help diagnose problems with web pages, resources, and servers so that issues can be quickly resolved.

They also help search engines understand the meaning of different pages and how they relate to each other. This helps improve website ranking and visibility for relevant search queries.


  • HTTP: The Definitive Guide by David Gourley and Brian Totty
  • Web Development & Design Foundations with HTML5 by Terry Felke-Morris
  • HTTP Pocket Reference: Hypertext Transfer Protocol by Clinton Wong
  • High Performance Browser Networking by Ilya Grigorik
  • RFC 2616 - Hypertext Transfer Protocol -- HTTP/1.1
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