301 Moved Permanently
3xx Redirection
The address moved for good; search ranking follows to the new URL.
| On the wire | HTTP/1.1 301 Moved Permanently |
|---|---|
| Code | 301 |
| Is it an error | No — not an error |
| Category | 3xx Redirection |
Go somewhere else — the distinction is permanent versus temporary.
How to read this
- The first digit of a status code carries the meaning: 4 means the request, 5 means the server.
- 404 means "not there"; 403 means "there, but not for you". Swapping them makes debugging slower.
- Header names are case-insensitive — Content-Type and content-type are the same header.
- Caching and CORS problems usually come down to one header line, visible in the browser’s network tab.
Frequently asked questions
Q. What does HTTP 301 Moved Permanently mean?
The address moved for good; search ranking follows to the new URL.
Q. What does 301 Moved Permanently look like on the wire?
It travels as HTTP/1.1 301 Moved Permanently
Q. Is 301 Moved Permanently an error?
No — it is part of a normal exchange, not a failure.
Q. What group does 301 Moved Permanently belong to?
The 3xx redirection group; the rest of that group is listed further down.