There was an firefox extension that did this as well, but it's been discontinued: https://github.com/palant/suspendbackgroundtabs https://github.com/palant/susp

There was an firefox extension that did this as well, but it's been discontinued: https://github.com/palant/suspendbackgroundtabs https://github.com/palant/suspendbackgroundtabs I wrote my own script that does this: https://github.com/kahing/bin/blob/master/throttle https://github.com/kahing/bin/blob/master/throttle