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Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
0
PASS
4
INFO
0
Device:
Mobile Desktop
Checks
6
4 PASS 2 FIX
D
CO2 Per Page Load
Action
0.98g CO2 per view
FIX
0.98g CO2 per view
Info::
0.98g CO2 per page view
This page transfers 4.2 MB, producing an estimated 0.98g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.20g, end-user device 0.76g.
Got: 0.98g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 118.0 kg CO2/year
With 10,000 page views per month, this page would generate approximately 118.0 kg of CO2 annually — equivalent to charging 14746 smartphones.
Info::
Green hosting reduces data center emissions

0.98g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 40% of websites

Sustainable Web Design model v4 · Page size: 4.2 MB

Your site
0.98g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.02g
Network
0.20g
End-user device
0.76g
At 10,000 monthly views: Monthly: 9.8 kg · Annual: 118.0 kg · ≈ 14746 smartphone charges
D
Carbon Budget
Action
60th percentile
FIX
60th percentile
Warning::
0.98g CO2 — above the median website (0.60g)
Heavier than an estimated 40% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 60th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.98g

60th percentile

Cleaner than 40% of websites

✗ Above the median website

vs Median 64% more
vs Target 97% more
A+
Green Hosting
Green (both)
PASS
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Acquia Cloud Platform, CDN: Cloudflare
Info::
Acquia Cloud Platform: Verified by the Green Web Foundation
Info::
Cloudflare: 100% renewable energy for global network since 2019
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 Hosting✓ Green Hosted
Hosting Acquia Cloud Platform✓CDN Cloudflare✓

Acquia Cloud Platform: Verified by the Green Web Foundation

Cloudflare: 100% renewable energy for global network since 2019

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+
Repeat Visit Weight
98% cached
PASS
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 87 KB (vs 4253 KB first visit). 52 of 55 resources are served from browser cache, saving 0.96g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.98g)
First visit
4253 KB
Repeat visit
87 KB

98% reduction on repeat visits

Saving 0.96g CO2 per returning visitor

52 resources served from cache · 3 resources re-downloaded

A+
Transfer Efficiency
91% efficient
PASS
91% efficient
Info::
Transfer efficiency: 91%
Only 385 KB of potential savings identified. Your page is well-optimized for size.
91% efficient

Total waste: 385 KB (9% of page weight)

Unused JS 385 KB

0.09g unnecessary CO2 per visit

Actual transfer 4253 KB
Theoretical minimum 3868 KB
Potential savings 385 KB (0.09g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

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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