HTTP Status Code Checker & Reference Guide

Complete reference guide for HTTP status codes. Look up status codes, understand their meanings, and learn when to use them in web development and API design.

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HTTP Status Codes

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Comprehensive guide covering all standard HTTP status codes with detailed explanations

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Understanding HTTP Status Codes

What are HTTP Status Codes?

HTTP status codes are three-digit numbers returned by web servers in response to HTTP requests. They indicate whether a specific HTTP request has been successfully completed, and if not, what kind of error occurred.

Status Code Structure

  • 100-199: Informational responses
  • 200-299: Successful responses
  • 300-399: Redirection messages
  • 400-499: Client error responses
  • 500-599: Server error responses

Why Status Codes Matter

HTTP status codes are crucial for web development, API design, and debugging. They help developers understand what's happening with their requests and provide appropriate responses to users.

API Development
Proper responses
SEO Benefits
Search engine friendly
User Experience
Clear error messages
Debugging
Easier troubleshooting

HTTP Status Code Best Practices

API Design

  • Use appropriate status codes for different scenarios
  • Provide meaningful error messages in response bodies
  • Use 201 for resource creation, 204 for no content
  • Implement proper error handling and logging

Web Development

  • Set up proper redirects (301, 302) for SEO
  • Use 403 for forbidden access, 401 for unauthorized
  • Monitor 5xx errors for server health
  • Track status code analytics for performance insights

Common HTTP Status Code Tools & Resources

Development Tools

  • Browser DevTools: Network tab status codes
  • cURL: Command line HTTP requests
  • Postman: API testing with status codes
  • Analytics: Track status code distributions

Learning Resources

  • MDN Web Docs: HTTP status codes reference
  • RFC 7231: HTTP/1.1 specification
  • HTTP Status Dogs: Fun status code explanations
  • REST API Guidelines: Best practices for APIs