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HTTP Status Code Explorer

Browse and search HTTP status codes (1xx–5xx) with explanations.

HTTP Status Code Explorer – Complete Reference Guide

HTTP status codes are three-digit numbers returned by servers to indicate the result of a request. They tell browsers, APIs, and developers whether a request succeeded, failed, or needs special handling. Understanding status codes is essential for web development, API design, and debugging. The HTTP Status Code Explorer by ToolfolioHub provides a comprehensive, searchable reference of status codes from 1xx to 5xx with clear explanations.

Whether you're building APIs, debugging errors, or learning web development, this tool helps you understand and use HTTP status codes correctly.

HTTP Status Code Ranges

1xx Informational

Provisional responses indicating the request was received and is being processed:

  • 100 Continue: Request headers received, continue with body
  • 101 Switching Protocols: Server switching protocols (e.g., HTTP to WebSocket)

2xx Success

Request was successfully received, understood, and accepted:

  • 200 OK: Request succeeded
  • 201 Created: New resource created
  • 204 No Content: Success but no content to return

3xx Redirection

Client must take additional action to complete the request:

  • 301 Moved Permanently: URL changed permanently
  • 302 Found: URL changed temporarily
  • 304 Not Modified: Resource unchanged (used with caching)

4xx Client Error

Request contains bad syntax or cannot be fulfilled by the server:

  • 400 Bad Request: Invalid request syntax
  • 401 Unauthorized: Authentication required
  • 403 Forbidden: Server refuses to authorize
  • 404 Not Found: Resource not found
  • 429 Too Many Requests: Rate limit exceeded

5xx Server Error

Server failed to fulfill a valid request:

  • 500 Internal Server Error: Server encountered an error
  • 502 Bad Gateway: Invalid response from upstream server
  • 503 Service Unavailable: Server temporarily unavailable
  • 504 Gateway Timeout: Upstream server didn't respond in time

Common Use-Cases

  • API Development: Return appropriate status codes for different scenarios
  • Error Handling: Understand what status codes mean when debugging
  • Web Development: Handle different response types correctly
  • Learning: Build understanding of HTTP protocol

Status Code Best Practices

  • Use Appropriate Codes: Choose codes that accurately reflect the situation
  • Be Consistent: Use the same codes for the same scenarios across your API
  • Include Error Details: Provide helpful error messages in response body
  • Document Your Codes: Document which codes your API returns and when

Conclusion

The HTTP Status Code Explorer is an essential reference for web developers. With searchable codes, clear explanations, and category filtering, it helps you understand and use status codes correctly in your projects.