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https://kansascity.com

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
1.16g CO2 per view
FIX
1.16g CO2 per view
Warning::
1.16g CO2 per page view
This page transfers 4.9 MB, producing an estimated 1.16g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.24g, end-user device 0.89g.
Got: 1.16g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 138.9 kg CO2/year
With 10,000 page views per month, this page would generate approximately 138.9 kg of CO2 annually — equivalent to charging 17367 smartphones.
Info::
Green hosting reduces data center emissions

1.16g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 35% of websites

Sustainable Web Design model v4 · Page size: 4.9 MB

Your site
1.16g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.03g
Network
0.24g
End-user device
0.89g
At 10,000 monthly views: Monthly: 11.6 kg · Annual: 138.9 kg · ≈ 17367 smartphone charges
D
Carbon Budget
Action
65th percentile
FIX
65th percentile
Warning::
1.16g CO2 — above the median website (0.60g)
Heavier than an estimated 35% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 65th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.16g

65th percentile

Cleaner than 35% of websites

✗ Above the median website

vs Median 93% more
vs Target 132% more
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
Google Cloud uses renewable energy
Info::
Google Cloud: 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 Google Cloud✓CDN Not identified✗

Google Cloud: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

B
Transfer Efficiency
77% efficient
REVIEW
77% efficient
Info::
Transfer efficiency: 77%
An estimated 1171 KB (23%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1171 KB of unused JavaScript. This wasted data produces 0.27g of unnecessary CO2 per page view.
77% efficient

Total waste: 1171 KB (23% of page weight)

Unused JS 1171 KB

0.27g unnecessary CO2 per visit

Actual transfer 5009 KB
Theoretical minimum 3837 KB
Potential savings 1171 KB (0.27g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Repeat Visit Weight
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 41 KB (vs 5009 KB first visit). 414 of 421 resources are served from browser cache, saving 1.15g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 1.16g)
First visit
5009 KB
Repeat visit
41 KB

99% reduction on repeat visits

Saving 1.15g CO2 per returning visitor

414 resources served from cache · 7 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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