Most of moment's size is in the localizations. You can reduce it from 300kb to 100kb by removing them or only including the ones you care about: https://stackov

Most of moment's size is in the localizations. You can reduce it from 300kb to 100kb by removing them or only including the ones you care about: https://stackoverflow.com/questions/25384360/how-to-prevent-moment-js-from-loading-locales-with-webpack https://stackoverflow.com/questions/25384360/how-to-prevent-... I think the bigger lesson, if moment's size is news to you (for those of us using webpack), is to install webpack-bundle-analyzer. It's loads of fun, if you like visualizations.