Is there a way to disable animation?

I have multiple sensory issues, including visual and auditory issues.

Is there any way to disable animation and autoplay, everywhere? Because parts of Mac OS X use animation, Apple's "help" feature uses animation, this web site uses animation, many other web sites use animation and autoplay... It hurts.

I would like to be able to enable things if and when I want to watch things, but given the choice I would rather be able to disable it all everywhere than have it enabled almost everywhere.

I currently use Firefox which has separate tools to blocked animated/pain-gifs, block various types of video, block ads, etc. I can't find similar tools for Safari, and I need some similar tools for Yosemite itself.