https://binance.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
58
GRADE
D
FIX
4
REVIEW
1
PASS
1
INFO
0
Checks
61 PASS 1 REVIEW 4 FIX
DCO2 Per Page LoadAction0.99g CO2 per viewFIX
CO2 Per Page Load
Action0.99g CO2 per view
0.99g CO2 per view
Info::
0.99g CO2 per page view
This page transfers 3.5 MB, producing an estimated 0.99g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.18g, network 0.17g, end-user device 0.63g.
Got: 0.99g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 118.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 118.4 kg of CO2 annually — equivalent to charging 14797 smartphones.
0.99g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 39% of websites
Sustainable Web Design model v4 · Page size: 3.5 MB
Your site
0.99g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.18g
Network
0.17g
End-user device
0.63g
At 10,000 monthly views: Monthly: 9.9 kg · Annual: 118.4 kg · ≈ 14797 smartphone charges
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
Unknown
Info::
Hosting provider could not be identified
Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments.
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 HostingUnable to Determine
Hosting Not identified✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction61th percentileFIX
Carbon Budget
Action61th percentile
61th percentile
Warning::
0.99g CO2 — above the median website (0.60g)
Heavier than an estimated 39% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 61th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.99g
61st percentile
Cleaner than 39% of websites
✗ Above the median website
vs Median 64% more
vs Target 97% more
DTransfer EfficiencyAction54% efficientFIX
Transfer Efficiency
Action54% efficient
54% efficient
Warning::
Transfer efficiency: 54%
An estimated 1635 KB (46%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1635 KB of unused JavaScript. This wasted data produces 0.45g of unnecessary CO2 per page view.
Total waste: 1635 KB (46% of page weight)
Unused JS 1635 KB
0.45g unnecessary CO2 per visit
Actual transfer 3567 KB
Theoretical minimum 1931 KB
Potential savings 1635 KB (0.45g CO2)
See Deep Analysis sections above for specific optimizations.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Repeat Visit Weight96% cachedPASS
Repeat Visit Weight
96% cached
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 142 KB (vs 3567 KB first visit). 186 of 191 resources are served from browser cache, saving 0.95g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 0.99g)
First visit
3567 KB
Repeat visit
142 KB
96% reduction on repeat visits
Saving 0.95g CO2 per returning visitor
186 resources served from cache · 5 resources re-downloaded
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.