As with most user-friendly browser innovations, it was Opera that did it first. I was using it as early as 2001 for its ability to easily turn off annoying Fla

As with most user-friendly browser innovations, it was Opera that did it first. I was using it as early as 2001 for its ability to easily turn off annoying Flash content unless specifically requested. It wasn't quite as simple as click-to-play or controllable per site until a few versions later; it was an application-wide toggle to enable plugins or not, but always very easy to use just one click away on the right-click quick preference menu.