notify.moe/docs/bookmarks.md

Bookmarks

Live/Dev switcher

Create a bookmark in your browser and set this code as the URL:

javascript:(() => {
	location = location.href.indexOf('://beta.') === -1 ?
	location.href.replace('://', '://beta.') : location.href.replace('://beta.', '://');
})();

Clicking this bookmark will let you switch between notify.moe (live) and beta.notify.moe (development).