…OMG. I’ve been noticing that browsing my Tumblr dash in Firefox uses up around 1/3 of my CPU cycles, even with ad scripts blocked, but couldn’t figure out why.
After reading some developer tools documentation online, I managed to pinpoint that it was something involving CSS animations, but couldn’t find any obvious element that was animating on the page. So then I did a bit more debugging to see what animations were being reported by the document inspector.
It’s the mouseover animation on the Tumblr logo. Which, apparently, is coded in such a way that it keeps animating in the background even when the mouse is nowhere near it (!?!?!?!).
this site is so damn badly designed, what the heck.
So turns out the adblock filter you need to get rid of it is ##.logo-anchor to remove a container the logo is in. The basic right-click to remove doesn’t work because the logo has a lot of states that count as different elements and you’d need to block all of them.
Okay, so I just tried this, and it WORKS, my laptop is now like fifty degrees cooler and calmer, THANK YOU, @schpeelah.