The HTTP 203 Non-Authoritative Information response status indicates that the request was successful but the enclosed payload has been modified from that of the origin server's 200 (OK) response by a transforming proxy.
The 203 response is similar to the value 214, meaning Transformation Applied, of the Warning header code, which has the additional advantage of being applicable to responses with any status code.
203 Non-Authoritative Information
| Specification | Title |
|---|---|
| RFC 7231, section 6.3.4: 203 Non-Authoritative Information | Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content |
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/203