What are server response codes and why are they important

Website tips from Smart Cow Marketing

Over the life of a website you will be (if you manage it that is) presented with Server Response Codes or ‘HTTP Status Codes’ in regard to different elements of your site’s maintenance needs and functionality. There are many response codes that you may be presented with when you work on a site but the most common ones are 404 errors and 301 errors.

Every time a HTTP request is made to a web server, the server can respond with many different responses.

Some of these are completely internal to the server and client or are out of date so you are very unlikely to see them.

Key server codes

Server response codes are classified as follows:
• 100s – Informational: process is continuing after request has been received.
• 200s – Success: process finished successfully after request was received.
• 300s – Redirection: Request has been received, but needs to perform an additional step to complete the request.
• 400s – Client Error: The Request made by client is for a not valid page.
• 500s – Server Error: Server failed to complete the request although valid request was made by the client.

While there are many different HTTP status codes, most are not directly important to SEO.

It is important to use server response codes for improved search engine optimisation such as using 301 Redirects which are recommended when you are redirecting pages or sites because other redirects such as the 302 redirect codes do not inform crawlers of search engines that a site or a page has permanently moved.

Also deploying a custom-made 404 (page not found) page can prevent people from leaving your site if one of your pages has moved or been renamed and can just point your visitor back to the homepage or referring page and so not losing them.

We hope that this article is of use, feel free to forward it to whoever may find it useful.

Digital marketing agency Surrey

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