How is this different from the HTTP Status Codes Table?

The table is a compact quick-reference with one-line descriptions. This checker provides multi-paragraph explanations, bulleted causes, and step-by-step solutions—it’s the tool you want when you’re actively debugging a specific status code.

Why does the checker show a different status code than my browser?

Browsers silently follow redirects (301, 302, 307) and only show you the final page. This tool shows the actual first response code from the server, which might be a redirect you never see in the address bar. That is often the more useful information for debugging.

HTTP Status Code Checker

About HTTP Status Code Checker

In-depth reference for 35 HTTP status codes with detailed explanations, common causes, and actionable solutions for each. Codes span all five categories: 1xx Informational, 2xx Success, 3xx Redirection, 4xx Client Error, and 5xx Server Error. Each entry goes beyond the one-line definition—it explains the practical meaning, lists real-world triggers (like “malformed JSON body” for 400 or “upstream server crashed” for 502), and provides specific troubleshooting steps.

35 codes from 100 Continue through 511 Network Authentication Required
Each code includes: short description, detailed explanation, common causes list, and solutions list
Color-coded cards by category: blue (1xx), green (2xx), yellow (3xx), orange (4xx), red (5xx)
Full-text search across code number, name, and description

Frequently Asked Questions

How is this different from the HTTP Status Codes Table?: The table is a compact quick-reference with one-line descriptions. This checker provides multi-paragraph explanations, bulleted causes, and step-by-step solutions—it’s the tool you want when you’re actively debugging a specific status code.
Why does the checker show a different status code than my browser?: Browsers silently follow redirects (301, 302, 307) and only show you the final page. This tool shows the actual first response code from the server, which might be a redirect you never see in the address bar. That is often the more useful information for debugging.

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