DevOnlineTools

HTTP Status Codes Inspector

Interactive reference guide and quick lookup for all 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response status codes.

devonlinetools://networking/http-status-codes
⌘ + EnterRun / Format
Shortcuts Active
200

OK

Standard response for successful HTTP requests.

201

Created

Request fulfilled, resulting in the creation of a new resource.

204

No Content

Request processed successfully, returning no body content.

301

Moved Permanently

Resource URI permanently changed to a new location.

302

Found (Temporary Redirect)

Resource temporarily resides under a different URI.

304

Not Modified

Resource unchanged since last request. Client can use cached version.

400

Bad Request

Server cannot process request due to malformed syntax or bad parameters.

401

Unauthorized

Authentication required or invalid authentication credentials.

403

Forbidden

Client authenticated, but lacks permissions to access resource.

404

Not Found

Requested resource could not be found on the server.

409

Conflict

Request conflicts with current state of target resource.

422

Unprocessable Entity

Syntax correct, but payload contains semantic validation errors.

429

Too Many Requests

Rate limit exceeded. Client sent too many requests in given timeframe.

500

Internal Server Error

Generic error encountered by server preventing request fulfillment.

502

Bad Gateway

Invalid response received from upstream server while acting as proxy.

503

Service Unavailable

Server overloaded or down for maintenance temporarily.

504

Gateway Timeout

Upstream server failed to respond in time while acting as gateway.