[imp0cat]

Yeah it looks like that, but is this an official standard that's defined somewhere. I am not sure what to search for.

[geraldhh]

hope this helps

https://en.wikipedia.org/wiki/HTTP_referer

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Re...

https://developer.chrome.com/blog/referrer-policy-new-chrome...