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https://eluniverso.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
50
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
3.03g CO2 per view
FIX
3.03g CO2 per view
Critical::
3.03g CO2 per page view
This page transfers 10.7 MB, producing an estimated 3.03g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.56g, network 0.52g, end-user device 1.95g.
Got: 3.03g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 363.6 kg CO2/year
With 10,000 page views per month, this page would generate approximately 363.6 kg of CO2 annually — equivalent to charging 45446 smartphones.

3.03g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 10.7 MB

Your site
3.03g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.56g
Network
0.52g
End-user device
1.95g
At 10,000 monthly views: Monthly: 30.3 kg · Annual: 363.6 kg · ≈ 45446 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 Amazon Web Services✗CDN Not identified✗

Based on known provider commitments. Verify at thegreenwebfoundation.org

F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
3.03g 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

3.03g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 405% more
vs Target 506% more
B
Transfer Efficiency
85% efficient
REVIEW
85% efficient
Info::
Transfer efficiency: 85%
An estimated 1680 KB (15%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1680 KB of unused JavaScript. This wasted data produces 0.46g of unnecessary CO2 per page view.
85% efficient

Total waste: 1680 KB (15% of page weight)

Unused JS 1680 KB

0.46g unnecessary CO2 per visit

Actual transfer 10955 KB
Theoretical minimum 9274 KB
Potential savings 1680 KB (0.46g 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
97% cached
PASS
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 362 KB (vs 10955 KB first visit). 244 of 251 resources are served from browser cache, saving 2.93g CO2 per repeat visit.
Info::
Repeat visit: 0.10g CO2 (first visit: 3.03g)
First visit
10955 KB
Repeat visit
362 KB

97% reduction on repeat visits

Saving 2.93g CO2 per returning visitor

244 resources served from cache · 7 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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