The HTTP 308 Permanent Redirect redirect status response code indicates that the resource requested has been definitively moved to the URL given by the Location headers. A browser redirects to this page, and search engines update their links to the resource (In SEO-speak, it is said that the link-juice is sent to the new URL).
The request method and the body will not be altered, whereas 301 may incorrectly sometimes be changed to a GET method.
Some Web applications may use the 308 Permanent Redirect in a non-standard way and for other purposes. For example, Google Drive uses a 308 Resume Incomplete response to indicate to the client when an incomplete upload stalled.[1]
308 Permanent Redirect
| Specification | Title |
|---|---|
| RFC 7538, section 3: 308 Permanent Redirect | The Hypertext Transfer Protocol Status Code 308 (Permanent Redirect) |
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Servo |
|---|---|---|---|---|---|---|---|
| Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Edge Mobile | Firefox for Android | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|---|
| Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/308