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https://utdallas.edu

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
66
GRADE
D
FIX
3
REVIEW
2
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 2 REVIEW 3 FIX
D
CO2 Per Page Load
Action
0.92g CO2 per view
FIX
0.92g CO2 per view
Info::
0.92g CO2 per page view
This page transfers 3.3 MB, producing an estimated 0.92g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.17g, network 0.16g, end-user device 0.59g.
Got: 0.92g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 110.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 110.7 kg of CO2 annually — equivalent to charging 13836 smartphones.

0.92g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 41% of websites

Sustainable Web Design model v4 · Page size: 3.3 MB

Your site
0.92g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.17g
Network
0.16g
End-user device
0.59g
At 10,000 monthly views: Monthly: 9.2 kg · Annual: 110.7 kg · ≈ 13836 smartphone charges
D
Green Hosting
Action
Unknown
FIX
Unknown
Info::
Hosting provider could not be identified
Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments.
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 HostingUnable to Determine
Hosting Not identified✗CDN Not identified✗

Based on known provider commitments. Verify at thegreenwebfoundation.org

D
Carbon Budget
Action
59th percentile
FIX
59th percentile
Warning::
0.92g CO2 — above the median website (0.60g)
Heavier than an estimated 41% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 59th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.92g

59th percentile

Cleaner than 41% of websites

✗ Above the median website

vs Median 54% more
vs Target 84% more
B
Transfer Efficiency
85% efficient
REVIEW
85% efficient
Info::
Transfer efficiency: 85%
An estimated 498 KB (15%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 498 KB of unused JavaScript. This wasted data produces 0.14g of unnecessary CO2 per page view.
85% efficient

Total waste: 498 KB (15% of page weight)

Unused JS 498 KB

0.14g unnecessary CO2 per visit

Actual transfer 3335 KB
Theoretical minimum 2836 KB
Potential savings 498 KB (0.14g 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 56 KB (vs 3335 KB first visit). 244 of 247 resources are served from browser cache, saving 0.91g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.92g)
First visit
3335 KB
Repeat visit
56 KB

98% reduction on repeat visits

Saving 0.91g CO2 per returning visitor

244 resources served from cache · 3 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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