HTTP Response Status Codes & Security Headers Inspector

HTTP Status Code Inspector & Reference

Interactive reference guide and inspector for HTTP response status codes (2xx, 3xx, 4xx, 5xx) and security headers.

HTTP Status Codes & Web Infrastructure

Standard Status Ranges

HTTP response status codes indicate whether a specific HTTP request has been successfully completed. 2xx indicates Success, 3xx indicates Redirection, 4xx indicates Client Error, and 5xx indicates Server Error.

API Error Handling

Consistently returning standard HTTP status codes (such as 400 Bad Request or 401 Unauthorized) enables REST API clients to handle errors gracefully.

📖 Detailed Guide & Use Cases

Search and inspect HTTP response status codes with the HTTP Status Code Inspector. Comprehensive explanations for 200 OK, 301 Moved Permanently, 400 Bad Request, 401 Unauthorized, 404 Not Found, 500 Internal Server Error, and 503 Service Unavailable.

❓ Frequently Asked Questions (FAQ)

A 301 status indicates a Permanent Redirect (search engines transfer SEO rank), whereas a 302 status is a Temporary Redirect.
418 "I am a teapot" is an IETF HTTP status code defined in 1998 as an April Fools Joke.