A large bundle size is the biggest fear to any JavaScript developer, but who knew a large bundle size affects more than your user experience? A large bundle also means that the CO2 footprint of your website is also bigger, as larger bundles need more bandwidth and resources. In 2020 the average website was 4 times bigger than 10 years before, what are the climate effects of this? In this talk I'll show how your website is impacting the climate, and how you can (and should) change this. https://jsconfbp.com/speakers/roy-derks About Roy: Roy Derks an experienced engineering leader, developer, author and public speaker from the Netherlands. Currently providing services to help tech companies scale from ideation to MVP or from startup to scaleup, by training and inspiring developers worldwide.