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https://goonmuse.com

Sustainability

· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
61
GRADE
D
FIX
3
REVIEW
1
PASS
3
INFO
1
Device:
Mobile Desktop
Checks
8
3 PASS 1 REVIEW 3 FIX
F
CO2 Per Page Load
Action
5.60g CO2 per view
FIX
5.60g CO2 per view
Critical::
5.60g CO2 per page view
This page transfers 19.8 MB, producing an estimated 5.60g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 1.04g, network 0.97g, end-user device 3.60g.
Got: 5.60g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 672.0 kg CO2/year
With 10,000 page views per month, this page would generate approximately 672.0 kg of CO2 annually — equivalent to charging 84001 smartphones.

5.60g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 19.8 MB

Your site
5.60g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
1.04g
Network
0.97g
End-user device
3.60g
At 10,000 monthly views: Monthly: 56.0 kg · Annual: 672.0 kg · ≈ 84001 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::
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 Apache HTTP Server✗CDN Not identified✗

Based on known provider commitments. Verify at thegreenwebfoundation.org

F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
5.60g 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

5.60g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 833% more
vs Target 1020% more
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 385 KB (vs 20248 KB first visit). 84 of 87 resources are served from browser cache, saving 5.49g CO2 per repeat visit.
Info::
Repeat visit: 0.11g CO2 (first visit: 5.60g)
First visit
20248 KB
Repeat visit
385 KB

98% reduction on repeat visits

Saving 5.49g CO2 per returning visitor

84 resources served from cache · 3 resources re-downloaded

A+
Transfer Efficiency
98% efficient
PASS
98% efficient
Info::
Transfer efficiency: 98%
Only 352 KB of potential savings identified. Your page is well-optimized for size.
98% efficient

Total waste: 352 KB (2% of page weight)

Unused JS 352 KB

0.10g unnecessary CO2 per visit

Actual transfer 20248 KB
Theoretical minimum 19896 KB
Potential savings 352 KB (0.10g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Web Font Weight Variants
4 font weights loaded across 1 famil(y/ies) -- reasonable
PASS
4 font weights loaded across 1 famil(y/ies) -- reasonable
Info::
4 font weight(s) loaded across 1 famil(y/ies)
Image Optimization
22 images, 722 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

22

Total Size

722 KB

18 missing alt text 10 missing dimensions 21 missing lazy loading
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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