Understanding HTTP Status Code Types

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If you want to see the status codes that your browser doesn't normally show you, there are many different tools that make it easy. Browser extensions are available for developer platforms like Chrome and Firefox, and there are many header-finding tools on the web like Web Sniffer .

To view HTTP status codes with one of these tools, look for the line near the top of the report that says “Status: HTTP/1.1.” This will be followed by the status code that was returned by the server.

HTTP status codes are divided into 5 “types.” These are groupings of responses that have similar or related meanings. Knowing what they are can help you quickly determine the general substance of a status cayman islands phone number data code before you go looking for its specific meaning.

The five classes include:

100s: Informational codes indicating that the request initiated by the browser is continuing.
200s: Success codes returned when the browser request was received, understood, and processed by the server.
300s: Redirect codes returned when a new resource has been replaced by the requested resource.
400s: Client error codes indicating that there was a problem with the request .
500s: Server error codes indicating that the request was accepted, but an error on the server prevented it from being fulfilled .
Within each of these types, there are a variety of server codes that can be returned by the server. Each individual code has a specific and unique meaning, which we will cover in the more detailed list below.

Why are HTTP status codes and errors important for search engine optimization (SEO)?
Search engine robots see HTTP status codes as they crawl your site . In some cases, these messages can influence whether your pages are indexed and how search engines perceive the health of your site.

In general, HTTP status codes of levels 100 and 200 won't have much of an impact on your SEO . They signal that everything is working as it should on your site, and let search engine bots move on. However, they won't improve your rankings either.