Software development has a significant environmental impact, contributing to around 3–4% of global CO2 emissions, which is comparable to the airline industry.
Emissions from popular websites like YouTube, Netflix, Facebook, and Amazon can also generate significant amounts of carbon emissions, ranging from thousands to millions of tons of CO2.
Several tools like the Website Carbon Calculator, EcoPing, EcoGrader, Green Web Foundation, and Sustainable Web Design (SWD) exist to help developers optimize their website for sustainability.
Sustainable software development practices can lead to lower costs, improved user experience, positive brand image, regulatory compliance, increased performance, SEO benefits, enhanced accessibility, and employee retention and satisfaction.
Best practices for building sustainable code include optimizing images and media, efficient code structure, minimizing API calls, reducing JavaScript execution, green hosting, and using content delivery networks (CDNs).
By choosing sustainable practices, developers can make a significant impact on reducing emissions, cutting costs, and providing a better experience for users, while contributing to a healthier planet and fostering innovation and efficiency.