While visiting this site for a first time all I saw at the top was huge clunk of JS code. I took me a white to realize that it was some FF extension that inject

While visiting this site for a first time all I saw at the top was huge clunk of JS code. I took me a white to realize that it was some FF extension that injects (non malicious) code to the every webpage (Web MIDI). It was a truly brutalists experience to see some things more exposed than I was prepared to.