To get your score we’re comparing your estimated CO2 per visit with the Eco-Friendly Web Alliance’s minimum criteria of 1g per visit. Find out more about their assessment criteria here https://ecofriendlyweb.org/eco-friendly-website-accreditation/
NB: We have used an average number of annual page visits of 300,000 to calculate this score. We’ve based this on research by Hubspot (https://blog.hubspot.com/blog/tabid/6307/bid/5092/how-many-visitors-should-your-site-get.aspx) that shows that about 66% of websites get a median average of 25,000 visits a month. We know we’re playing fast and loose with this, but it’s an MVP. In a future update we’re going to give you the power to put in the average number of monthly visits your site gets so you can get a more accurate figure.