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Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
72
GRADE
C
FIX
2
REVIEW
2
PASS
2
INFO
0
Device:
Mobile Desktop
Checks
6
2 PASS 2 REVIEW 2 FIX
D
CO2 Per Page Load
Action
1.24g CO2 per view
FIX
1.24g CO2 per view
Warning::
1.24g CO2 per page view
This page transfers 5.2 MB, producing an estimated 1.24g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.26g, end-user device 0.95g.
Got: 1.24g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 148.9 kg CO2/year
With 10,000 page views per month, this page would generate approximately 148.9 kg of CO2 annually — equivalent to charging 18607 smartphones.
Info::
Green hosting reduces data center emissions

1.24g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 32% of websites

Sustainable Web Design model v4 · Page size: 5.2 MB

Your site
1.24g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.03g
Network
0.26g
End-user device
0.95g
At 10,000 monthly views: Monthly: 12.4 kg · Annual: 148.9 kg · ≈ 18607 smartphone charges
D
Carbon Budget
Action
68th percentile
FIX
68th percentile
Warning::
1.24g CO2 — above the median website (0.60g)
Heavier than an estimated 32% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 68th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.24g

68th percentile

Cleaner than 32% of websites

✗ Above the median website

vs Median 107% more
vs Target 148% more
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
GoDaddy uses renewable energy
Info::
GoDaddy: 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 GoDaddy✓CDN Not identified✗

GoDaddy: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

B
Transfer Efficiency
78% efficient
REVIEW
78% efficient
Info::
Transfer efficiency: 78%
An estimated 1160 KB (22%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1160 KB of unused JavaScript. This wasted data produces 0.27g of unnecessary CO2 per page view.
78% efficient

Total waste: 1160 KB (22% of page weight)

Unused JS 1160 KB

0.27g unnecessary CO2 per visit

Actual transfer 5366 KB
Theoretical minimum 4206 KB
Potential savings 1160 KB (0.27g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Repeat Visit Weight
98% cached
PASS
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 84 KB (vs 5366 KB first visit). 211 of 231 resources are served from browser cache, saving 1.22g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 1.24g)
First visit
5366 KB
Repeat visit
84 KB

98% reduction on repeat visits

Saving 1.22g CO2 per returning visitor

211 resources served from cache · 20 resources re-downloaded

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

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.

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