https://emmanuelalade.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
64
GRADE
D
FIX
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
FCO2 Per Page LoadAction3.48g CO2 per viewFIX
CO2 Per Page Load
Action3.48g CO2 per view
3.48g CO2 per view
Critical::
3.48g CO2 per page view
This page transfers 14.7 MB, producing an estimated 3.48g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.09g, network 0.72g, end-user device 2.68g.
Got: 3.48g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 418.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 418.1 kg of CO2 annually — equivalent to charging 52265 smartphones.
Info::
Green hosting reduces data center emissions
3.48g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 14.7 MB
Your site
3.48g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.09g
Network
0.72g
End-user device
2.68g
At 10,000 monthly views: Monthly: 34.8 kg · Annual: 418.1 kg · ≈ 52265 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
3.48g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
3.48g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 481% more
vs Target 597% more
CWeb Font Weight VariantsAction10 font weights loaded across 2 famil(y/ies)REVIEW
Web Font Weight Variants
Action10 font weights loaded across 2 famil(y/ies)
10 font weights loaded across 2 famil(y/ies)
Warning::
10 font weights loaded -- likely 100+ KB of unused payload
Loading 10 font weights typically transfers 200-400 KB just for fonts. Most pages legitimately use 2-3 weights (regular + bold, maybe medium). Audit which weights your stylesheet actually applies and trim the Google Fonts URL accordingly. Affected families: Cormorant Garamond, Inter.
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
AGreen HostingGreen (cdn)PASS
Green Hosting
Green (cdn)
Green (cdn)
Info::
Netlify CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
Info::
Netlify: Hosted on AWS/Google Cloud with renewable energy matching
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 Not identified✗CDN Netlify✓
Netlify: Hosted on AWS/Google Cloud with renewable energy matching
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 1 KB (vs 15074 KB first visit). 17 of 18 resources are served from browser cache, saving 3.48g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 3.48g)
First visit
15074 KB
Repeat visit
1 KB
100% reduction on repeat visits
Saving 3.48g CO2 per returning visitor
17 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency100% efficientPASS
Transfer Efficiency
100% efficient
100% efficient
Info::
Transfer efficiency: 100%
Only 50 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 50 KB (0% of page weight)
Unused JS 50 KB
0.01g unnecessary CO2 per visit
Actual transfer 15074 KB
Theoretical minimum 15024 KB
Potential savings 50 KB (0.01g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization13 images, 5787 KB total, 1220 KB wastedINFO
Image Optimization
13 images, 5787 KB total, 1220 KB wasted
Image Optimization Audit
Total Images
13
Total Size
5787 KB
Oversized
1
Wasted
1220 KB
13 missing dimensions 3 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.