Probably too late, but uBlock Origin can disable animations (technically fast-forwards to the end, less likely to break the page) for all websites. In the Setti

Probably too late, but uBlock Origin can disable animations (technically fast-forwards to the end, less likely to break the page) for all websites. In the Settings > My Filters tab, add: !Disable CSS animations globally *,com##*, ::before, ::after :style(animation-timing-function: step-start !important;transition-timing-function: step-start !important) Text shadows and filters are also pretty heavy CSS properties: !Disable text shadow globally *,com##*, ::before, ::after :style(text-shadow: none !important) !Disable image filters globally *,com##*, ::before, ::after :style(filter: none !important) Even disabling rounded corners can improve perf (and I think it looks better): !Disable rounded corners globally *,com##*, ::before, ::after :style(border-radius: 0px !important)