About This Tool
Search and filter through all HTTP status codes from 1xx to 5xx. Each code includes a description, common causes, and troubleshooting tips. Useful for debugging API responses and web applications.
Free Tool
HTTP Status Code Reference
Complete HTTP status code reference with search and filtering. Find any status code (1xx-5xx) with descriptions, common causes, and solutions.
Frequently Asked Questions
1xx: Informational, 2xx: Success, 3xx: Redirection, 4xx: Client Error, 5xx: Server Error. The most common are 200 (OK), 301 (Redirect), 404 (Not Found), and 500 (Server Error).
401 Unauthorized means the request lacks valid authentication credentials. 403 Forbidden means the server understood the request but refuses to authorize it, even with valid credentials.
429 means you have exceeded the rate limit set by the server. Wait for the period specified in the Retry-After header before making more requests.
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