Prototype is a free Chrome extension developed by rick.hey.huang. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This extension aims to measure the environmental friendliness of websites by calculating the carbon footprint they produce.

With Prototype, users can gain insights into the carbon emissions generated by the websites they visit. This information can be valuable for individuals who are conscious about their environmental impact and want to make informed choices while browsing the web. By quantifying the carbon footprint, Prototype allows users to identify websites that may have a higher environmental impact and take steps to minimize their usage.

The extension provides an easy-to-use interface that seamlessly integrates into the Chrome browser. Users can view the carbon footprint of a website by simply visiting it, without any additional steps or configuration required. Prototype offers a unique and innovative approach to raising awareness about the environmental impact of web browsing.