HTTP Status Checker

An HTTP status code is a three-digit number a server sends back with every response, telling the client broadly what happened: 2xx codes mean success, 3xx mean the client should look elsewhere (a redirect), 4xx mean the client's request had a problem, and 5xx mean the server itself had a problem handling an otherwise valid request.

A 301 tells a client the resource has permanently moved to a new URL. It's the standard choice when a page is renamed or a site restructures its URLs and wants future requests, and search engines, to treat the new URL as the resource's real address going forward.

301 and 302 are the older, more universally supported pair, permanent vs. temporary, but neither strictly guarantees that a client resends a non-GET request (like a POST) with its original method and body after following them. 307 and 308 exist specifically to remove that ambiguity: 307 is an explicit temporary redirect and 308 an explicit permanent one, both guaranteeing the original method and body are preserved.

A redirect loop happens when a chain of redirects eventually leads back to a URL it already visited, meaning it can never reach a final destination, for example A → B → A. This is a genuine configuration error, this tool detects it and stops rather than requesting indefinitely.

A handful of statuses matter most when maintaining a site: a 404 on a page meant to still exist is worth investigating, a 301 is the standard way to signal a permanent URL change during a migration, and repeated 5xx errors point to a real reliability problem. It's worth being precise here rather than making blanket claims, a 404 doesn't automatically hurt rankings (some content genuinely should return one), and a 301 doesn't automatically transfer all of a page's ranking signals in every case, both depend heavily on context this tool alone can't fully evaluate.

Status and speed are two different measurements. A URL can return a healthy 200 status while still loading slowly for real visitors, and a fast response can still carry an error status. The response time shown here measures how long this checker's own request took, not real-user page load performance or Core Web Vitals, which depend on far more than the initial HTTP response.

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