A browser extension that tracks the carbon footprint of your web browsing using actual measured data from the Performance API.

Measures your client-side carbon emissions from network data transfer and device energy consumption while browsing. Works on any website automatically.

1. Measures actual bytes transferred using Performance API
2. Calculates carbon emissions using research-backed formulas:
   • Network: (GB × 0.016 kWh/GB) × regional_carbon_intensity
   • Device: (minutes/60 × watts/1000) × regional_carbon_intensity
   • Uses your region's grid carbon intensity (via ElectricityMaps API) or global baseline (475 gCO₂/kWh)
3. Displays breakdown by category and platform with actionable recommendations

Average web user: ~75g CO₂/day from browsing

Developers: Load unpacked from chrome://extensions/ with developer mode enabled Users: Install from Chrome Web Store (coming soon)

Calculations based on IEA (2024), Carbon Trust (2021), and ElectricityMaps data. Regional carbon intensity varies from 18 gCO₂/kWh (Iceland) to 800+ gCO₂/kWh (coal-heavy grids).

Built for a more sustainable internet 🌍