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How to Use HTTP Status Code Reference: Complete Step-by-Step Guide

Learn how to use HTTP Status Code Reference with our complete step-by-step guide. Includes pro tips, common use cases, and expert best practices for getting the best results.

What Is HTTP Status Code Reference?

Searchable reference of all HTTP status codes with descriptions and use cases.

Pro Tips for Using HTTP Status Code Reference

Get the most out of HTTP Status Code Reference with these expert tips:

Use 201 for resource creation: Return 201 Created (not 200 OK) when a POST request successfully creates a new resource, and include the resource URL in the Location header.

Use 409 for conflicts: Return 409 Conflict when a request conflicts with the current state of the resource, such as duplicate entries or version conflicts.

Common Use Cases for HTTP Status Code Reference

HTTP Status Code Reference is perfect for:

  • Quickly look up status codes while debugging API responses
  • Learn proper status code usage when designing RESTful APIs
  • Reference RFC documentation for custom API error responses

  • Why Use HTTP Status Code Reference Online?

    HTTP Status Code Reference runs entirely in your browser — no downloads, no uploads, no sign-up required. Your data stays private on your device. It is free to use with no limitations, making it the perfect choice for developers, designers, and professionals who need quick, reliable results without compromising security.

    Frequently Asked Questions

    What is the difference between 401 and 403?

    401 Unauthorized means the client must authenticate. 403 Forbidden means the server understood the request but refuses to authorize it, even with authentication.

    What does 502 Bad Gateway mean?

    502 Bad Gateway means the server, acting as a gateway or proxy, received an invalid response from an upstream server it accessed to fulfill the request.

    When should I use 201 vs 200?

    Use 200 OK for successful requests that return data. Use 201 Created specifically when a POST request successfully creates a new resource.

    Can I filter by status code category?

    Yes. Use the category filters to show only 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), or 5xx (Server Error) codes.