Comment by pmontra

My experience with uMatrix: most sites work right away. Others require fiddling with the matrix of media, script, xhr, frames and the third parties serving them. After a while it's easy to remember which ones must be temporary enabled and which ones don't. Sites with videos are a little more difficult. Sites with payments require care. I whitelist the minimum set of scripts that make the sites I use often work. There are usually many scripts that can be left out. If everything fails and it's a one shot site, I start Chrome.