Clear all animations on websites.
- webp animated thumbnails on youtube

Some animations such as "transform" or "animation" still occur because they destroy the functioning of the page.
However, if you want to remove them add this to "*":
transform: none !important;
animation: none !important;

Credits:
Pause all HTML5 videos on load (versions 2.5 - 2.1): https://greasyfork.org/pl/scripts/6487-pause-all-html5-videos-on-load/code