You know I'm tired of accidentally selecting a preloaded inactive tab and having cringes about the sound that is unawarely being played on the background. I just want some extension or about:conf setting that make to load tabs only if I press some button, eg reload button, or go button and not just because I activated the tab by clicking on it. The reason for this is that the most times that i activate a preloaded tab is just only for check title, adress bar and make some edit at the uri , i really dont want all the rest of the circus going on loudly, wasting memory, making requests at me by every medium is possible and distracting me for what im doing. Indeed this is exactly what I want to find, unless i press some button: http://imgur.com/YLACB6hs.png or better an inocuous thumbnail like this: https://imgur.com/a/eagtiQx I wish that i could make me understand and find a solution, thanks.