clarkwinkelmann You're probably looking for the LoadingIndicator component: https://github.com/flarum/core/blob/master/js/src/common/components/LoadingIndicator.js https://github.com/flarum/core/blob/master/less/common/LoadingIndicator.less It has a class of .LoadingIndicator and inside of it there's a spinner managed by the spin.js library. You can probably switch the image with CSS, or if you want to use other options from the spin.js library you will need to extend the component with an extension.
