Explore the impact of frontend code on carbon emissions in this 20-minute conference talk from Conf42 JS 2023. Delve into the concept of digital ecology and understand how internet usage contributes to CO2 emissions through data transfer, power lines, and end devices. Learn practical strategies to reduce the carbon footprint of digital activities, including optimizing emails, browsing habits, and device usage. Discover techniques for creating more sustainable websites by considering programming languages, libraries, API calls, and resource management. Examine the importance of sustainable web design and explore formulas for measuring environmental impact. Gain insights into the ec0lint project, its features, and its potential for scaling sustainable web development practices. Access valuable references and connect with the speaker, Julia Ziebinska, for further discussion on this crucial topic.