https://icloud.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
70
GRADE
C
FIX
3
REVIEW
3
PASS
1
INFO
1
Checks
81 PASS 3 REVIEW 3 FIX
DCO2 Per Page LoadAction1.03g CO2 per viewFIX
CO2 Per Page Load
Action1.03g CO2 per view
1.03g CO2 per view
Warning::
1.03g CO2 per page view
This page transfers 3.6 MB, producing an estimated 1.03g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.19g, network 0.18g, end-user device 0.66g.
Got: 1.03g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 123.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 123.1 kg of CO2 annually — equivalent to charging 15390 smartphones.
1.03g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 38% of websites
Sustainable Web Design model v4 · Page size: 3.6 MB
Your site
1.03g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.19g
Network
0.18g
End-user device
0.66g
At 10,000 monthly views: Monthly: 10.3 kg · Annual: 123.1 kg · ≈ 15390 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 BudgetAction62th percentileFIX
Carbon Budget
Action62th percentile
62th percentile
Warning::
1.03g CO2 — above the median website (0.60g)
Heavier than an estimated 38% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 62th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.03g
62nd percentile
Cleaner than 38% of websites
✗ Above the median website
vs Median 71% more
vs Target 105% more
BTransfer Efficiency84% efficientREVIEW
Transfer Efficiency
84% efficient
84% efficient
Info::
Transfer efficiency: 84%
An estimated 581 KB (16%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 581 KB of unused JavaScript. This wasted data produces 0.16g of unnecessary CO2 per page view.
Total waste: 581 KB (16% of page weight)
Unused JS 581 KB
0.16g unnecessary CO2 per visit
Actual transfer 3709 KB
Theoretical minimum 3128 KB
Potential savings 581 KB (0.16g CO2)
See Deep Analysis sections above for specific optimizations.
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
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 Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 11 KB (vs 3709 KB first visit). 30 of 31 resources are served from browser cache, saving 1.02g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 1.03g)
First visit
3709 KB
Repeat visit
11 KB
100% reduction on repeat visits
Saving 1.02g CO2 per returning visitor
30 resources served from cache · 1 resources re-downloaded
Image Optimization4 images, 314 KB total, 183 KB wastedINFO
Image Optimization
4 images, 314 KB total, 183 KB wasted
Image Optimization Audit
Total Images
4
Total Size
314 KB
Oversized
1
Wasted
183 KB
1 missing alt text 3 missing dimensions 2 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.