Should I use 401 or 403 for authentication failures?

401 Unauthorized means the request lacks valid authentication credentials (not logged in). 403 Forbidden means the server refuses to authorize an authenticated user (logged in but not permitted). Use 401 for 'log in first', 403 for 'you can't do this'.

What is the difference between 301 and 308?

301 Moved Permanently may change the method from POST to GET on redirect (historical behavior). 308 Permanent Redirect preserves the method. Use 308 for permanent redirects where the method must not change; 301 for compatibility with older clients.

Look up el meaning de un HTTP status código

Obtener the category, reason phrase, and common usage for any HTTP status code (1xx-5xx).

1

HTTP status codes are grouped: 1xx informational, 2xx success, 3xx redirect, 4xx client error, 5xx server error. Knowing the exact meaning (not just the category) helps debug API responses and design correct error handling.
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Referencia de códigos de estado HTTP →
Enter a status code (e.g. 418) or browse by category. The tool returns the reason phrase ('I'm a Teapot'), category, and common usage notes including when to use vs related codes.

Preguntas frecuentes

Should I use 401 or 403 for authentication failures?: 401 Unauthorized means the request lacks valid authentication credentials (not logged in). 403 Forbidden means the server refuses to authorize an authenticated user (logged in but not permitted). Use 401 for 'log in first', 403 for 'you can't do this'.
What is the difference between 301 and 308?: 301 Moved Permanently may change the method from POST to GET on redirect (historical behavior). 308 Permanent Redirect preserves the method. Use 308 for permanent redirects where the method must not change; 301 for compatibility with older clients.

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Referencia de códigos de estado HTTP

Reference table of common HTTP status codes (1xx-5xx) with names, categories, and descriptions. Gratis, privado y 100% del lado del cliente.

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Analizador de URL

Parse a URL into its components: protocol, host, path, query, hash, port, username, and password. Gratis, privado y 100% del lado del cliente.

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