A Complete Guide and List of HTTP Status Codes

HTTP status codes are like short notes from a server that get tacked onto a web page. They’re not actually part of the site’s content. Instead, they’re messages from the server letting you know how things went when it received the request to view a certain page.

These kinds of messages are returned every time your browser interacts with a server, even if you don’t see them. If you’re a website owner or developer, understanding HTTP status codes is critical. When they do show up, HTTP status codes are an invaluable tool for diagnosing and fixing website configuration errors.

This article introduces several server status and error codes, and explains what they reveal about what’s happening on the server behind the scenes.

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