Blocking with extensions:
You can use browser extensions like uBlock Origin or Adblock to block Rufus. These extensions allow you to block specific elements on a page, effectively preventing Rufus from appearing.
Blocking Rufus:
You can block Rufus by right-clicking on the Rufus pop-up, selecting "Block element," and then ensuring the red rectangle appears around the Rufus area, and clicking "Create".
Potential issues:
You might need to block multiple elements before Rufus completely stops appearing, according to some users.