Every time you open a website, sign into an application, or send a request to an API, a server responds with a small but powerful message: an HTTP status code.
Most developers encounter these codes every day.
But behind every number is a story about what happened between the client and the server.
HTTP status codes are part of a standardized response system defined by RFC 9110. They help applications understand whether a request succeeded, needs attention, or failed.
The HTTP Status Code Families
