Referencja kodów statusu HTTP

Sprawdź kody statusu HTTP: 1xx, 2xx, 3xx, 4xx, 5xx.

100

Continue

Server received request headers

101

Switching Protocols

Upgrade requested

200

Request succeeded

201

Created

Resource created

204

No Content

Success, no body

301

Moved Permanently

Redirect permanently

302

Found

Temporary redirect

304

Not Modified

Use cached version

400

Bad Request

Invalid syntax

401

Unauthorized

Authentication required

403

Forbidden

Access denied

404

Not Found

Resource not found

405

Method Not Allowed

HTTP method not allowed

422

Unprocessable Entity

Validation error

429

Too Many Requests

Rate limit exceeded

500

Internal Server Error

Server error

502

Bad Gateway

Invalid response from upstream

503

Service Unavailable

Server overloaded

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How to Use

Browse the status codes by category (1xx through 5xx)
Click on any code to see its detailed description
Use the search box to find a specific code quickly
Review the use cases to understand when to return each code

Common Use Cases

Designing REST API response codes
Debugging HTTP errors in web applications
Learning about HTTP protocol standards
Documenting API error handling behavior

Frequently Asked Questions

What is the difference between 401 and 403?

401 Unauthorized means the client has not provided valid authentication credentials. 403 Forbidden means the client is authenticated but does not have permission to access the resource.

When should I use 200 vs 201 vs 204?

Use 200 OK for successful GET requests, 201 Created when a new resource is created (POST), and 204 No Content for successful requests with no response body (DELETE).

What does a 502 Bad Gateway error mean?

502 means the server acting as a gateway received an invalid response from an upstream server. It usually indicates a problem with the backend service, not the client.