Complete guide to understanding every HTTP status code. Learn what each code means in plain English, common causes, how to fix errors, and the impact on SEO and user experience.
Quick reference for the status codes you'll encounter most often
Enter a status code to see detailed information
HTTP status codes are three-digit numbers returned by servers to indicate the result of a request. They're essential for understanding what's happening between your browser and a website's server.
Whether you're debugging a website issue, optimizing for SEO, or monitoring uptime, understanding status codes helps you quickly identify and resolve problems before they impact users.
Indicate that the request was received and the process is continuing. Rarely seen by end users, these are interim responses during request processing.
The request was successfully received, understood, and accepted. These are the responses you want to see - everything worked as expected.
Further action needs to be taken to complete the request. The resource has moved or additional steps are required to access the content.
The request contains bad syntax or cannot be fulfilled due to client-side issues. These indicate problems with the request itself.
The server failed to fulfill an apparently valid request. These indicate problems on the server side that need immediate attention.
Don't wait for users to report errors. Site Qwality monitors your website continuously and alerts you immediately when status codes indicate problems - from 404 errors to server failures.
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