If you are building a React + Redux App that has Webpack, then you might have noticed that the size of the final bundle.js (the dev version) for a simple app itself could be 1MB- 2MB! For example: Below is a picture from Webpack stats analyzer for the simple react-redux-blog (live). It shows that total size is 1.5MB and 90% (1.2MB) is just libraries in node_modules! It could be scary😱 but Webpack