Although this is a clever branding exercise for the creator agency Wholegrain Digital - it's well executed.
Naturally I placed chanc.ee through it and was surprised it came back so poorly:
Hurrah! This web page is cleaner than 91% of web pages tested, Only 0.10g of CO2 is produced every time someone visits this web page.
Although 0.10g doesn't sound like a lot* it would equate to 11.66kg per year serving 10,000 views a month. Most of this load comes from serving two web fonts - removing those has brought down the load to 0.02g per view/2kg per year.
A 60% cut in emissions is worth dropping the typeface for.
* Presumably apart from the wire-costs of transmitting the data this could be brought to zero via something like LowTechMagazine's solar powered server. 🤔https://chanc.ee/20211212-website-carbon.html