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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
0.83g CO2 per view
FIX
0.83g CO2 per view
Info::
0.83g CO2 per page view
This page transfers 2.9 MB, producing an estimated 0.83g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.15g, network 0.14g, end-user device 0.53g.
Got: 0.83g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 99.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 99.7 kg of CO2 annually — equivalent to charging 12464 smartphones.

0.83g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 44% of websites

Sustainable Web Design model v4 · Page size: 2.9 MB

Your site
0.83g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.15g
Network
0.14g
End-user device
0.53g
At 10,000 monthly views: Monthly: 8.3 kg · Annual: 99.7 kg · ≈ 12464 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
56th percentile
FIX
56th percentile
Warning::
0.83g CO2 — above the median website (0.60g)
Heavier than an estimated 44% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 56th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.83g

56th percentile

Cleaner than 44% of websites

✗ Above the median website

vs Median 38% more
vs Target 66% more
B
Transfer Efficiency
80% efficient
REVIEW
80% efficient
Info::
Transfer efficiency: 80%
An estimated 609 KB (20%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 609 KB of unused JavaScript. This wasted data produces 0.17g of unnecessary CO2 per page view.
80% efficient

Total waste: 609 KB (20% of page weight)

Unused JS 609 KB

0.17g unnecessary CO2 per visit

Actual transfer 3004 KB
Theoretical minimum 2395 KB
Potential savings 609 KB (0.17g 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 3004 KB first visit). 233 of 236 resources are served from browser cache, saving 0.82g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.83g)
First visit
3004 KB
Repeat visit
56 KB

98% reduction on repeat visits

Saving 0.82g CO2 per returning visitor

233 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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