Emissions Tracker by People & Code is a Chrome extension designed to help users monitor the carbon dioxide emissions generated by web page requests in real-time. This tool provides a detailed summary of the data received from various sites, highlighting their associated carbon emissions and indicating whether the hosting is renewable. Users can easily analyze the emissions data, which is categorized by content type, allowing for a better understanding of the environmental impact of their web activities.

In addition to real-time tracking, the extension allows for the exportation of emissions data in JSON format, facilitating further analysis or integration with other tools. The data is sourced from The Green Web Foundation, ensuring reliability and accuracy. As part of a suite of open-source tools developed by People and Code, Emissions Tracker promotes collaborative experimentation and awareness of web sustainability.