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https://unstoppabledomains.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
1
PASS
3
INFO
0
Device:
Mobile Desktop
Checks
6
3 PASS 1 REVIEW 2 FIX
D
CO2 Per Page Load
Action
1.29g CO2 per view
FIX
1.29g CO2 per view
Warning::
1.29g CO2 per page view
This page transfers 5.5 MB, producing an estimated 1.29g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.27g, end-user device 0.99g.
Got: 1.29g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 155.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 155.4 kg of CO2 annually — equivalent to charging 19418 smartphones.
Info::
Green hosting reduces data center emissions

1.29g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 31% of websites

Sustainable Web Design model v4 · Page size: 5.5 MB

Your site
1.29g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.03g
Network
0.27g
End-user device
0.99g
At 10,000 monthly views: Monthly: 12.9 kg · Annual: 155.4 kg · ≈ 19418 smartphone charges
D
Carbon Budget
Action
69th percentile
FIX
69th percentile
Warning::
1.29g CO2 — above the median website (0.60g)
Heavier than an estimated 31% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 69th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.29g

69th percentile

Cleaner than 31% of websites

✗ Above the median website

vs Median 116% more
vs Target 159% more
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Green Hosting
Green (both)
PASS
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Google Cloud, CDN: Fastly
Info::
Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017
Info::
Fastly: 100% renewable energy for edge network
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 Fastly✓

Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017

Fastly: 100% renewable energy for edge network

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+
Repeat Visit Weight
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 35 KB (vs 5600 KB first visit). 60 of 61 resources are served from browser cache, saving 1.29g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 1.29g)
First visit
5600 KB
Repeat visit
35 KB

99% reduction on repeat visits

Saving 1.29g CO2 per returning visitor

60 resources served from cache · 1 resources re-downloaded

A+
Transfer Efficiency
96% efficient
PASS
96% efficient
Info::
Transfer efficiency: 96%
Only 219 KB of potential savings identified. Your page is well-optimized for size.
96% efficient

Total waste: 219 KB (4% of page weight)

Unused JS 219 KB

0.05g unnecessary CO2 per visit

Actual transfer 5600 KB
Theoretical minimum 5381 KB
Potential savings 219 KB (0.05g CO2)

See Deep Analysis sections above for specific optimizations.

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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