I posted it because it was super useful while I was trying to debug some Referer header "error", which actually just turned out to be a gap in my knowledge of t

I posted it because it was super useful while I was trying to debug some Referer header "error", which actually just turned out to be a gap in my knowledge of these various situations where the header is suppressed on purpose. Main takeaways for me: - Go from HTTPS -> HTTP and the header is lost. - <a> tag has "noreferrer" feature. Notably imgur uses this (I was trying to understand why imgur wasn't showing up in my stats properly). - There's now a meta tag which lets site owners decide if they want to give out referrer info or not.