https://mercola.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
84
GRADE
B
FIX
1
REVIEW
1
PASS
4
INFO
0
Checks
64 PASS 1 REVIEW 1 FIX
DCarbon BudgetAction52th percentileFIX
Carbon Budget
Action52th percentile
52th percentile
Warning::
0.67g CO2 — above the median website (0.60g)
Heavier than an estimated 48% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 52th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.67g
52nd percentile
Cleaner than 48% of websites
✗ Above the median website
vs Median 12% more
vs Target 34% more
BCO2 Per Page Load0.67g CO2 per viewREVIEW
CO2 Per Page Load
0.67g CO2 per view
0.67g CO2 per view
Info::
0.67g CO2 per page view
This page transfers 2.8 MB, producing an estimated 0.67g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.14g, end-user device 0.51g.
Got: 0.67g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 80.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 80.5 kg of CO2 annually — equivalent to charging 10056 smartphones.
Info::
Green hosting reduces data center emissions
0.67g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 48% of websites
Sustainable Web Design model v4 · Page size: 2.8 MB
Your site
0.67g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.14g
End-user device
0.51g
At 10,000 monthly views: Monthly: 6.7 kg · Annual: 80.5 kg · ≈ 10056 smartphone charges
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Cloudflare, CDN: Cloudflare
Info::
Cloudflare: 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 Cloudflare✓CDN Cloudflare✓
Cloudflare: 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 Weight93% cachedPASS
Repeat Visit Weight
93% cached
93% cached
Info::
93% reduction on repeat visits
Returning visitors download only 189 KB (vs 2900 KB first visit). 68 of 71 resources are served from browser cache, saving 0.63g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 0.67g)
First visit
2900 KB
Repeat visit
189 KB
93% reduction on repeat visits
Saving 0.63g CO2 per returning visitor
68 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency95% efficientPASS
Transfer Efficiency
95% efficient
95% efficient
Info::
Transfer efficiency: 95%
Only 158 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 158 KB (5% of page weight)
Unused JS 158 KB
0.04g unnecessary CO2 per visit
Actual transfer 2900 KB
Theoretical minimum 2742 KB
Potential savings 158 KB (0.04g CO2)
See Deep Analysis sections above for specific optimizations.
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
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.