anshumankumar.net got an A+ on the Website Carbon Calculator: cleaner than 93% of pages tested, 0.04 g of CO2 per visit, on sustainable energy. Modeled at 10,000 monthly views (generous, I know), that's about 4.5 kg of CO2 a year.
Jamstack wins again. Prebuilt static files on a CDN means almost nothing to transfer and nothing to compute per request. The cheap option is also the clean one.
If your site is mostly content, try it: pick a static site generator, push to git, deploy to a CDN, then run your URL through the calculator and see how you stack up.
