https://android.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
90
GRADE
A
FIX
0
REVIEW
3
PASS
3
INFO
0
Checks
63 PASS 3 REVIEW
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
Google Cloud uses renewable energy
Info::
Google Cloud: Verified by the Green Web Foundation
Info::
Green hosting status based on known provider commitments
Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org.
Green Hosting✓ Green Hosted
Hosting Google Cloud✓CDN Not identified✗
Google Cloud: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
BCarbon Budget33th percentileREVIEW
Carbon Budget
33th percentile
33th percentile
Info::
0.43g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 67% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 33th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.43g
33rd percentile
Cleaner than 67% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 28% cleaner ✓
vs Target 13% cleaner ✓
BTransfer Efficiency88% efficientREVIEW
Transfer Efficiency
88% efficient
88% efficient
Info::
Transfer efficiency: 88%
An estimated 216 KB (12%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 216 KB of unused JavaScript. This wasted data produces 0.05g of unnecessary CO2 per page view.
Total waste: 216 KB (12% of page weight)
Unused JS 216 KB
0.05g unnecessary CO2 per visit
Actual transfer 1879 KB
Theoretical minimum 1663 KB
Potential savings 216 KB (0.05g CO2)
See Deep Analysis sections above for specific optimizations.
ACO2 Per Page Load0.43g CO2 per viewPASS
CO2 Per Page Load
0.43g CO2 per view
0.43g CO2 per view
Info::
0.43g CO2 per page view
This page transfers 1.8 MB, producing an estimated 0.43g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.09g, end-user device 0.33g.
Got: 0.43g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 52.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 52.1 kg of CO2 annually — equivalent to charging 6516 smartphones.
Info::
Green hosting reduces data center emissions
0.43g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 67% of websites
Sustainable Web Design model v4 · Page size: 1.8 MB
Your site
0.43g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.09g
End-user device
0.33g
At 10,000 monthly views: Monthly: 4.3 kg · Annual: 52.1 kg · ≈ 6516 smartphone charges
A+Repeat Visit Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 41 KB (vs 1879 KB first visit). 70 of 71 resources are served from browser cache, saving 0.42g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.43g)
First visit
1879 KB
Repeat visit
41 KB
98% reduction on repeat visits
Saving 0.42g CO2 per returning visitor
70 resources served from cache · 1 resources re-downloaded
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Google Cloud
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.