Carbonlite — Website Carbon Footprint

by Antony Prabakaran Jayaveeran · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Measure the carbon footprint of any website in real time. Get a grade (A+ to F) and actionable recommendations to reduce emissions.

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#309K

#248K among extensions

Version

1.0.0

updated 20 Apr 2026

Users

monthly, 6 months

Latest, 15 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 6 months

Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Carbonlite — Website Carbon Footprint

Carbonlite measures the real-time carbon footprint of every website you visit and gives developers actionable recommendations to build a cleaner web. 🌿 HOW IT WORKS Carbonlite uses the Sustainable Web Design Model (SWDM v4) to calculate CO2 emissions based on: • Data transferred (images, scripts, CSS, fonts) • Hosting type (green vs standard data center) • Network and device energy consumption • Embodied carbon from hardware manufacturing 📊 FEATURES • Real-time carbon grade (A+ to F) for every page • Resource breakdown by type (images, JS, CSS, fonts) • Industry benchmark comparison (e-commerce, blog, SaaS, news) • Actionable fix recommendations with estimated savings • 7-day trend tracking per domain • Carbon budget alerts • Green hosting detection via Green Web Foundation (opt-in) • Dark mode support • Export history as JSON 🔒 PRIVACY-FIRST • All data stored locally on your device — never sent to our servers • Green hosting check is opt-in and sends only hostnames (not full URLs) • No tracking, analytics, or telemetry • No personal data collected • Incognito mode fully respected — zero data persisted in private windows 🎯 BUILT FOR DEVELOPERS Carbonlite is designed for web developers who want to understand and reduce the environmental impact of their websites. Unlike consumer carbon trackers, Carbonlite provides: • Per-resource breakdown with file-level detail • Copy-paste optimization checklists • Format-specific image compression suggestions • Third-party script impact analysis • New vs returning visitor comparison 📐 METHODOLOGY Based on the Sustainable Web Design Model v4 (sustainablewebdesign.org): • Energy model: Data center (0.055 kWh/GB) + Network (0.059) + Device (0.080) • Grid intensity: 480 gCO2e/kWh global average (Ember 2023), with 11 regional options • Embodied carbon: +16% for hardware manufacturing • Green hosting: 50 gCO2e/kWh for renewable-powered data centers 🔧 PERMISSIONS EXPLAINED • sidePanel: Display the carbon analysis UI • storage: Save settings and history locally on your device • tabs: Identify Chrome internal pages and respect Incognito privacy • webNavigation: Detect page loads for automatic analysis • Content script: Collect resource sizes via Performance API (no page content is read) • thegreenwebfoundation.org: Green hosting check (opt-in only, disabled by default) Questions? Report issues at github.com/rapidminds-tech/carbonlite