HTTP коды состояния — Бесплатно Онлайн
Полный справочник всех HTTP-кодов состояния с описаниями.
Frequently Asked Questions
What is the difference between 301 and 302 redirects?
301 Moved Permanently tells search engines and browsers the resource has moved forever — they update their index and cache the new URL. 302 Found is a temporary redirect — search engines keep the original URL indexed. Use 301 for permanent URL changes.
What causes a 502 Bad Gateway vs 503 Service Unavailable?
502 means the server received an invalid response from an upstream server (common in reverse proxy setups). 503 means the server is temporarily unable to handle requests (overloaded or in maintenance). Both indicate server-side issues.
When should I use 400 vs 422 for API validation errors?
400 Bad Request is for malformed requests (invalid JSON, missing required headers). 422 Unprocessable Entity is for syntactically valid requests that fail business logic validation (e.g. email already exists). Many REST APIs use 400 for both.
What is the difference between 401 Unauthorized and 403 Forbidden?
401 means the user is not authenticated — they need to log in or provide credentials. 403 means the user IS authenticated but lacks permission to access the resource. Returning 403 reveals the resource exists; returning 404 hides that.
What does HTTP 418 "I'm a Teapot" mean?
HTTP 418 is an April Fools' joke from RFC 2324 (1998) — any attempt to brew coffee with a teapot returns 418. It's a real status code that some frameworks implement as an Easter egg. It has no practical use.
Is the HTTP коды состояния free to use?
Yes, the HTTP коды состояния on Allio Tools is completely free with no sign-up or registration required. It works directly in your browser.
How does the HTTP коды состояния work?
Полный справочник всех HTTP-кодов состояния с описаниями. No data is sent to a server — everything runs locally in your browser for maximum privacy and speed.
Do I need to install anything to use the HTTP коды состояния?
No installation needed. The HTTP коды состояния runs entirely in your web browser on any device — desktop, tablet, or mobile.
Is my data safe when using the HTTP коды состояния?
Completely safe. The HTTP коды состояния processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Does the HTTP коды состояния work offline?
After the page loads for the first time, the HTTP коды состояния works without an internet connection for all client-side processing. Tools that fetch live external data (such as DNS or network lookups) require an active connection.
How current is the data returned by the HTTP коды состояния?
The HTTP коды состояния fetches live data in real time each time you run it. Results reflect the current state of the server or domain at the moment of the request.
Why does the HTTP коды состояния sometimes return different results than other tools?
Results depend on the real-time state of the target server and DNS propagation, which can vary by geographic region and caching TTL. If you see inconsistencies, wait a few minutes and re-test — DNS changes can take up to 48 hours to propagate fully worldwide.
Does the HTTP коды состояния work on all browsers?
Yes. The HTTP коды состояния is built with standard browser APIs and works on all modern browsers including Chrome, Firefox, Safari, and Edge — on both desktop and mobile. No plugins, extensions, or third-party software are required.
How do I save or export my results from the HTTP коды состояния?
Select and copy the result text to paste into any document or app. For image tools, a Download button saves the file directly to your device. Your browser's built-in screenshot function also captures results quickly. No account or login is required.