https://icons8.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
81
GRADE
B
FIX
1
REVIEW
2
PASS
3
INFO
0
Checks
63 PASS 2 REVIEW 1 FIX
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
BCarbon Budget33th percentileREVIEW
Carbon Budget
33th percentile
33th percentile
Info::
0.44g 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
0.44g
33rd percentile
Cleaner than 67% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 27% cleaner ✓
vs Target 13% cleaner ✓
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
ACO2 Per Page Load0.44g CO2 per viewPASS
CO2 Per Page Load
0.44g CO2 per view
0.44g CO2 per view
Info::
0.44g CO2 per page view
This page transfers 1.5 MB, producing an estimated 0.44g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.08g, network 0.08g, end-user device 0.28g.
Got: 0.44g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 52.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 52.5 kg of CO2 annually — equivalent to charging 6559 smartphones.
0.44g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 67% of websites
Sustainable Web Design model v4 · Page size: 1.5 MB
Your site
0.44g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.08g
Network
0.08g
End-user device
0.28g
At 10,000 monthly views: Monthly: 4.4 kg · Annual: 52.5 kg · ≈ 6559 smartphone charges
A+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 42 KB (vs 1581 KB first visit). 116 of 117 resources are served from browser cache, saving 0.43g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.44g)
First visit
1581 KB
Repeat visit
42 KB
97% reduction on repeat visits
Saving 0.43g CO2 per returning visitor
116 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency90% efficientPASS
Transfer Efficiency
90% efficient
90% efficient
Info::
Transfer efficiency: 90%
Only 151 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 151 KB (10% of page weight)
Unused JS 151 KB
0.04g unnecessary CO2 per visit
Actual transfer 1581 KB
Theoretical minimum 1429 KB
Potential savings 151 KB (0.04g CO2)
See Deep Analysis sections above for specific optimizations.
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.