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https://nola.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
47
GRADE
F
FIX
4
REVIEW
1
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 1 REVIEW 4 FIX
F
CO2 Per Page Load
Action
3.61g CO2 per view
FIX
3.61g CO2 per view
Critical::
3.61g CO2 per page view
This page transfers 12.8 MB, producing an estimated 3.61g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.67g, network 0.62g, end-user device 2.32g.
Got: 3.61g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 433.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 433.3 kg of CO2 annually — equivalent to charging 54167 smartphones.

3.61g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 12.8 MB

Your site
3.61g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.67g
Network
0.62g
End-user device
2.32g
At 10,000 monthly views: Monthly: 36.1 kg · Annual: 433.3 kg · ≈ 54167 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

F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
3.61g 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

3.61g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 502% more
vs Target 622% more
F
Transfer Efficiency
Action
39% efficient
FIX
39% efficient
Critical::
Transfer efficiency: 39%
An estimated 7958 KB (61%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 7958 KB of unused JavaScript. This wasted data produces 2.20g of unnecessary CO2 per page view.
39% efficient

Total waste: 7958 KB (61% of page weight)

Unused JS 7958 KB

2.20g unnecessary CO2 per visit

Actual transfer 13057 KB
Theoretical minimum 5098 KB
Potential savings 7958 KB (2.20g 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 376 KB (vs 13057 KB first visit). 939 of 980 resources are served from browser cache, saving 3.51g CO2 per repeat visit.
Info::
Repeat visit: 0.10g CO2 (first visit: 3.61g)
First visit
13057 KB
Repeat visit
376 KB

97% reduction on repeat visits

Saving 3.51g CO2 per returning visitor

939 resources served from cache · 41 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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