Be aware - this addon blocks all autoplay videos everywhere and doesn't have whitelist

ALMOST THERE !!! You are almost there my friend; but Kudos because SO MANY other AutoPlay blockers are failing. This actually does work correctly on Mashable and other sites that somehow still AutoPlay. Meanwhile, it auto plays on YouTube when you click on a Video; which makes sense since you clicked a thumbnail to play it. What is missing? You do not block pre-loading or caching; so on Mashable it will STOP AUTOPLAY, but you can see that about 30 seconds of the video got buffered. This has to be blocked; because they are STILL loading "junk" in the background, so it is not just AutoPlay. Next, you really need to apply a gray, transparent layer or move that PLAY NOW icon to the center \ middle of the video thumbnail. I code and listen\watch videos; so I need to know when something is being autoplay blocked; so make it more obvious or visible. Almost there and I will re-test when fixed and up to FIVE stars if it continues to work. You also need to get Mozilla Approval for your Extension...