How We Built Carbon Badge: A Website Carbon Calculator Using SWDM v4

How We Built Carbon Badge: A Website Carbon Calculator Every website has a carbon footprint. Every page load consumes energy across data centers, networks, and end-user devices. Most site owners have no idea how much. We built Carbon Badge to make website carbon emissions visible and actionable. The Problem Website sustainability is growing in importance: The internet accounts for roughly 3.7% of global carbon emissions An average web page produces about 0.5g CO2 per pageview EU regulations are pushing digital sustainability requirements But measuring website carbon is surprisingly complex. There was no simple tool that combined accurate calculations with an embeddable badge. How It Works The Sustainable Web Design Model (SWDM v4) We use the latest SWDM v4 methodology from the Sustainable Web Design community: // Energy intensity: 0.194 kWh per GB transferred // Split: Data Center (0.055) + Network (0.059) + Device (0.080) define ( 'SWDM_KWH_PER_GB' , 0.194 ); define ( 'SWDM_GRID_INTEN