The carbon footprint of the digital sector accounts for more than 3% of the entire equivalent CO2 emissions and is rapidly growing. Currently, web applications waste resources by providing functionalities and operating with higher-quality attributes that certain users do not need. On the other hand, the users do not have any decision-making power over the resources that are used by the application. Facing this context, this talk presents a project from Unibz that proposes a solution to empower web application users to make eco-friendly and sustainable choices. By proposing that users can reduce energy consumption by turning off functionalities and making trade-offs related to quality attribute parameters, we explore a new dimension not yet considered in the current solutions for the development of sustainable web applications. The presentation focuses on two challenges: how to make it easily pluggable into existing applications and how to provide a user interface accessible to non-technical users.
