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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
72
GRADE
C
FIX
2
REVIEW
1
PASS
3
INFO
0
Device:
Mobile Desktop
Checks
6
3 PASS 1 REVIEW 2 FIX
D
CO2 Per Page Load
Action
1.00g CO2 per view
FIX
1.00g CO2 per view
Warning::
1.00g CO2 per page view
This page transfers 4.2 MB, producing an estimated 1.00g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.21g, end-user device 0.77g.
Got: 1.00g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 120.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 120.5 kg of CO2 annually — equivalent to charging 15062 smartphones.
Info::
Green hosting reduces data center emissions

1.00g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 39% of websites

Sustainable Web Design model v4 · Page size: 4.2 MB

Your site
1.00g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.03g
Network
0.21g
End-user device
0.77g
At 10,000 monthly views: Monthly: 10.0 kg · Annual: 120.5 kg · ≈ 15062 smartphone charges
D
Carbon Budget
Action
61th percentile
FIX
61th percentile
Warning::
1.00g CO2 — above the median website (0.60g)
Heavier than an estimated 39% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 61th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.00g

61st percentile

Cleaner than 39% of websites

✗ Above the median website

vs Median 67% more
vs Target 101% more
C
Transfer Efficiency
Action
69% efficient
REVIEW
69% efficient
Warning::
Transfer efficiency: 69%
An estimated 1354 KB (31%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1354 KB of unused JavaScript. This wasted data produces 0.31g of unnecessary CO2 per page view.
69% efficient

Total waste: 1354 KB (31% of page weight)

Unused JS 1354 KB

0.31g unnecessary CO2 per visit

Actual transfer 4344 KB
Theoretical minimum 2989 KB
Potential savings 1354 KB (0.31g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Green Hosting
Green (both)
PASS
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: WordPress VIP, CDN: Cloudflare
Info::
WordPress VIP: 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 WordPress VIP✓CDN Cloudflare✓

WordPress VIP: 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
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 63 KB (vs 4344 KB first visit). 109 of 111 resources are served from browser cache, saving 0.99g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 1.00g)
First visit
4344 KB
Repeat visit
63 KB

99% reduction on repeat visits

Saving 0.99g CO2 per returning visitor

109 resources served from cache · 2 resources re-downloaded

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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