https://worldpopulationreview.com
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
0
PASS
4
INFO
0
Checks
64 PASS 2 FIX
FCO2 Per Page LoadAction2.08g CO2 per viewFIX
CO2 Per Page Load
Action2.08g CO2 per view
2.08g CO2 per view
Critical::
2.08g CO2 per page view
This page transfers 8.8 MB, producing an estimated 2.08g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.05g, network 0.43g, end-user device 1.60g.
Got: 2.08g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 250.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 250.1 kg of CO2 annually — equivalent to charging 31262 smartphones.
Info::
Green hosting reduces data center emissions
2.08g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 8.8 MB
Your site
2.08g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.05g
Network
0.43g
End-user device
1.60g
At 10,000 monthly views: Monthly: 20.8 kg · Annual: 250.1 kg · ≈ 31262 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
2.08g 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
2.08g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 247% more
vs Target 317% more
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Hetzner Online GmbH, CDN: Bunny CDN
Info::
Hetzner Online GmbH: Verified by the Green Web Foundation
Info::
Bunny CDN: Carbon-neutral CDN with renewable energy
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 Hetzner Online GmbH✓CDN Bunny CDN✓
Hetzner Online GmbH: Verified by the Green Web Foundation
Bunny CDN: Carbon-neutral CDN with renewable energy
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 601 KB (vs 9016 KB first visit). 1414 of 1514 resources are served from browser cache, saving 1.95g CO2 per repeat visit.
Info::
Repeat visit: 0.14g CO2 (first visit: 2.08g)
First visit
9016 KB
Repeat visit
601 KB
93% reduction on repeat visits
Saving 1.95g CO2 per returning visitor
1414 resources served from cache · 100 resources re-downloaded
A+Transfer Efficiency92% efficientPASS
Transfer Efficiency
92% efficient
92% efficient
Info::
Transfer efficiency: 92%
Only 692 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 692 KB (8% of page weight)
Unused JS 692 KB
0.16g unnecessary CO2 per visit
Actual transfer 9016 KB
Theoretical minimum 8323 KB
Potential savings 692 KB (0.16g 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: Hetzner Online GmbH
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.