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https://smartasset.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
53
GRADE
F
FIX
3
REVIEW
2
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 2 REVIEW 3 FIX
F
CO2 Per Page Load
Action
2.13g CO2 per view
FIX
2.13g CO2 per view
Critical::
2.13g CO2 per page view
This page transfers 7.5 MB, producing an estimated 2.13g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.39g, network 0.37g, end-user device 1.37g.
Got: 2.13g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 255.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 255.8 kg of CO2 annually — equivalent to charging 31974 smartphones.

2.13g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 7.5 MB

Your site
2.13g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.39g
Network
0.37g
End-user device
1.37g
At 10,000 monthly views: Monthly: 21.3 kg · Annual: 255.8 kg · ≈ 31974 smartphone charges
D
Green Hosting
Action
Not green
FIX
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
Info::
AWS: Renewable energy varies by region; committed to 100% by 2025
Info::
AWS CloudFront: Renewable varies by edge location
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 HostingNot Green Hosted
Hosting AWS✗CDN AWS CloudFront✗

AWS: Renewable energy varies by region; committed to 100% by 2025

AWS CloudFront: Renewable varies by edge location

Based on known provider commitments. Verify at thegreenwebfoundation.org

F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
2.13g 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

2.13g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 255% more
vs Target 326% more
B
Transfer Efficiency
87% efficient
REVIEW
87% efficient
Info::
Transfer efficiency: 87%
An estimated 1035 KB (13%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1035 KB of unused JavaScript. This wasted data produces 0.29g of unnecessary CO2 per page view.
87% efficient

Total waste: 1035 KB (13% of page weight)

Unused JS 1035 KB

0.29g unnecessary CO2 per visit

Actual transfer 7707 KB
Theoretical minimum 6672 KB
Potential savings 1035 KB (0.29g CO2)

See Deep Analysis sections above for specific optimizations.

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Repeat Visit Weight
98% cached
PASS
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 157 KB (vs 7707 KB first visit). 155 of 157 resources are served from browser cache, saving 2.09g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 2.13g)
First visit
7707 KB
Repeat visit
157 KB

98% reduction on repeat visits

Saving 2.09g CO2 per returning visitor

155 resources served from cache · 2 resources re-downloaded

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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