About HTTP Status
Use HTTP Status to Status codes reference. The tool runs in your browser for fast results and keeps your data local.
How to Use
- 1. Add your input or data.
- 2. Adjust options if needed.
- 3. Review the result and copy it.
What are HTTP Status Codes?
HTTP status codes are three-digit numbers returned by servers to indicate the result of a client request. Status codes are grouped into five classes: 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), and 5xx (Server Error). Common codes include 200 (OK), 301 (Moved Permanently), 404 (Not Found), and 500 (Internal Server Error). Understanding status codes is essential for API development, debugging, SEO, and monitoring. Each code has a specific meaning defined by RFC standards, helping developers diagnose issues and implement proper error handling.
Common Use Cases
HTTP status codes are fundamental to web development and debugging. Backend developers implement proper status codes for API responses. Frontend developers handle different status codes for error messages and retry logic. SEO specialists monitor 301/302 redirects and 404 errors for site health. DevOps engineers set up monitoring alerts for 5xx server errors. Security researchers analyze status codes for vulnerability scanning. API documentation specifies expected status codes for each endpoint. Load balancers use status codes for health checks.
- API response status code implementation
- Error handling and retry logic in clients
- SEO monitoring of redirects and 404 errors
- Server error monitoring and alerting
- Security vulnerability scanning
- API documentation of expected responses
- Load balancer health checks
- Debugging HTTP request issues
Best Practices & Tips
Use appropriate status codes—200 for success, 201 for created, 204 for no content. Return 4xx for client errors (400 bad request, 401 unauthorized, 403 forbidden, 404 not found). Return 5xx for server errors (500 internal error, 502 bad gateway, 503 service unavailable). Use 301 for permanent redirects (SEO-friendly) and 302 for temporary redirects. Include error details in response body, not just status code. Use 429 for rate limiting with Retry-After header. Return 304 Not Modified for cached resources. Avoid using 200 for errors—use proper error codes.
- Use 200 for success, 201 for created, 204 for no content
- Return 4xx for client errors (400, 401, 403, 404)
- Return 5xx for server errors (500, 502, 503)
- Use 301 for permanent, 302 for temporary redirects
- Include error details in body, not just code
- Use 429 for rate limiting with Retry-After
- Return 304 for cached resources
- Never use 200 for errors—use proper codes
Troubleshooting Common Issues
If 404 errors occur, verify the URL path and routing configuration. If 500 errors occur, check server logs for exceptions and stack traces. If 401 errors occur, verify authentication credentials and tokens. If 403 errors occur, check authorization and permissions. If 502/503 errors occur, the upstream server may be down or overloaded. If 301/302 redirect loops occur, check redirect configuration. If 429 rate limit errors occur, implement exponential backoff. If CORS errors occur (not a status code), check Access-Control headers.
- 404 errors from incorrect URL or routing
- 500 errors from server exceptions
- 401 errors from invalid authentication
- 403 errors from insufficient permissions
- 502/503 errors from upstream server issues
- 301/302 redirect loops from misconfiguration
- 429 rate limit errors without backoff
- CORS errors from missing Access-Control headers
Frequently Asked Questions
Is HTTP Status free to use?
Yes. HTTP Status is free and works directly in your browser.
Does HTTP Status upload my data?
No. Most processing happens locally. Any network requests are clearly indicated.
What formats does HTTP Status support?
HTTP Status supports the common formats described on the page. Convert uncommon formats before pasting.
How should I share results from HTTP Status?
Copy the output and review any sensitive data before sharing or publishing.