Introduction
HTTP status codes are an essential part of the web browsing experience, yet many users are unaware of their significance. These three-digit codes provide valuable information about the outcome of a request made by a browser to a web server. They serve as a communication tool between the client and the server, indicating whether a request was successful or encountered an error. In this blog, we will explore some commonly encountered HTTP status codes and their meanings, shedding light on their importance in understanding and troubleshooting web-related issues.
1** – Information
These status codes indicate that the server has received the request and is processing it. They are primarily used for informational purposes and rarely encountered in practice.
100 – Continue
The server has received the initial part of the request and the client should proceed.
101 – Switching
The server understands the request and is switching to a different protocol.
102 – Processing
The server has accepted the request but has not yet completed it.
103 – Early hints
The server provides some response headers before the final response.
2** – Success
Codes in this range signify that the request was successful and the server has fulfilled it. The most common and well-known status code in this category is 200, which means the request was successful and the server is returning the requested content.
200 – OK
The request was successful and the response contains the requested data.
201 – Created
The request was successful and resulted in the creation of a new resource.
202 – Accepted
The request has been accepted for processing, but the processing is not yet complete.
204 – No content
The server has received the initial pard of the request and the client should proceed.
3** – Redirection
These codes indicate that the requested resource has been moved or temporarily relocated. They instruct the client to take further action, such as visiting a different URL or using a different method to access the resource.
301 – Moved permanently
The requested resources has moved to a new URL permanently.
302 – Found
The requested resource can be found under a different URL.
303 – See other
The response to the request can be found under a different URL using the GET method.
307 – Temporary redirect
The request should be repeated with another URL, but future requests should still use the original URL.
4** – Client errors
Codes starting with 4 indicate that the client’s request contains an error or cannot be fulfilled. The most recognizable code in this category is 404, which means the requested resource was not found.
400 – Bad request
The server cannot understand the request due to bad syntax.
401 – Unauthorized
The request requires authentication and the client has not provided valid credentials.
403 – Forbidden
The server understood the request but the client does not have permission to access resources.
404 – Not found
The requested resource could not be found on the server.
5** – Server errors
Status codes in the 5xx range indicate that the server encountered an error while fulfilling the request. These errors are typically caused by issues on the server’s side.
500 – Internal Server Error
An unexpected condition was encountered by the server, preventing it from fulfilling the request.
502 – Bad Gateway
The server acting as a gateway received an invalid response from an upstream server.
503 – Service Unavailable
The server is kindly unable the request due to temporary overload or maintenance.
504 – Gateway Timeout
The server acting as a gateway did not receive a timely response from an upstream server.
Conclusion
HTTP status codes may seem like cryptic numbers at first glance, but they play a crucial role in our everyday web browsing. Whether it’s a 200 indicating a successful request, a 404 signaling a missing page, or a 500 revealing a server error, these codes help us understand the state of our interactions with websites. By familiarizing ourselves with the most common status codes and their meanings, we can navigate the web with greater understanding and troubleshoot issues more effectively. So, the next time you encounter an HTTP status code, remember that it’s not just a random number – it’s a valuable piece of information guiding your online experience.
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