https://answerthepublic.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
66
GRADE
D
FIX
2
REVIEW
0
PASS
4
INFO
0
Checks
64 PASS 2 FIX
FCO2 Per Page LoadAction2.13g CO2 per viewFIX
CO2 Per Page Load
Action2.13g CO2 per view
2.13g CO2 per view
Critical::
2.13g CO2 per page view
This page transfers 9.0 MB, producing an estimated 2.13g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.05g, network 0.44g, end-user device 1.63g.
Got: 2.13g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 255.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 255.1 kg of CO2 annually — equivalent to charging 31885 smartphones.
Info::
Green hosting reduces data center emissions
2.13g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 9.0 MB
Your site
2.13g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.05g
Network
0.44g
End-user device
1.63g
At 10,000 monthly views: Monthly: 21.3 kg · Annual: 255.1 kg · ≈ 31885 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
2.13g 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
2.13g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 254% more
vs Target 325% more
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Next.js, CDN: Cloudflare
Info::
Next.js: 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 Next.js✓CDN Cloudflare✓
Next.js: 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 Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 95 KB (vs 9196 KB first visit). 134 of 135 resources are served from browser cache, saving 2.10g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 2.13g)
First visit
9196 KB
Repeat visit
95 KB
99% reduction on repeat visits
Saving 2.10g CO2 per returning visitor
134 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency92% efficientPASS
Transfer Efficiency
92% efficient
92% efficient
Info::
Transfer efficiency: 92%
Only 721 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 721 KB (8% of page weight)
Unused JS 721 KB
0.17g unnecessary CO2 per visit
Actual transfer 9196 KB
Theoretical minimum 8475 KB
Potential savings 721 KB (0.17g 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.