HTTP Status Reference
Professional HTTP Status Reference
100Continue
101Switching Protocols
102Processing
103Early Hints
200OK
201Created
202Accepted
204No Content
206Partial Content
226IM Used
301Moved Permanently
302Found
303See Other
304Not Modified
307Temporary Redirect
308Permanent Redirect
400Bad Request
401Unauthorized
403Forbidden
404Not Found
405Method Not Allowed
406Not Acceptable
408Request Timeout
409Conflict
410Gone
413Payload Too Large
415Unsupported Media Type
421Misdirected Request
422Unprocessable Entity
425Too Early
426Upgrade Required
428Precondition Required
429Too Many Requests
431Request Header Fields Too Large
451Unavailable For Legal Reasons
500Internal Server Error
501Not Implemented
502Bad Gateway
503Service Unavailable
504Gateway Timeout
511Network Authentication Required
HTTP Status Reference
Professional HTTP Status Reference
Features
- Complete RFC-based reference: 1xx (informational), 2xx (success), 3xx (redirection), 4xx (client error), 5xx (server error)
- 41 codes including modern additions: 102/103, 226, 308, 421, 425, 426, 428, 429, 431, 451, 511
- Search by code number or name (Continue, Created, …)
- Filter by category (1xx through 5xx)
- Plain-English description for every code drawn from the RFC
How to use
- Enter your input data in the provided field.
- Configure any options as needed.
- View the results instantly and copy or download the output.
Tips & Best Practices
- Pick 308 over 301 if you want the redirect to preserve the request method (301/302 historically rewrite POST → GET).
- 422 Unprocessable Entity is the common pick for "valid syntax but semantically wrong" requests — e.g., JSON parses but fails business rules.
- 429 Too Many Requests should include a Retry-After header so clients know when to come back.
- 451 Unavailable For Legal Reasons is the standard for content removed under legal demand (DMCA, court order, geo-blocks).
- 511 is the captive-portal signal — clients see it and know they need to authenticate to the network, not the application.
FAQ
Is this tool free to use?
Yes, completely free with no registration, no limits, and no hidden costs.
Is my data private?
All processing happens in your browser. No data is ever sent to any server or third party.
Does it work offline?
Once loaded, the tool works entirely offline. All processing is done client-side with JavaScript.
Which browsers are supported?
Works in Chrome, Firefox, Safari, Edge, and all modern browsers on desktop and mobile.
Can I use the results commercially?
Yes, all output is yours to use freely in any personal or commercial project without restrictions.