https://explodingtopics.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
68
GRADE
D
FIX
3
REVIEW
0
PASS
3
INFO
0
Checks
63 PASS 3 FIX
DCO2 Per Page LoadAction0.92g CO2 per viewFIX
CO2 Per Page Load
Action0.92g CO2 per view
0.92g CO2 per view
Info::
0.92g CO2 per page view
This page transfers 3.9 MB, producing an estimated 0.92g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.19g, end-user device 0.71g.
Got: 0.92g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 110.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 110.4 kg of CO2 annually — equivalent to charging 13796 smartphones.
Info::
Green hosting reduces data center emissions
0.92g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 41% of websites
Sustainable Web Design model v4 · Page size: 3.9 MB
Your site
0.92g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.19g
End-user device
0.71g
At 10,000 monthly views: Monthly: 9.2 kg · Annual: 110.4 kg · ≈ 13796 smartphone charges
DCarbon BudgetAction59th percentileFIX
Carbon Budget
Action59th percentile
59th percentile
Warning::
0.92g CO2 — above the median website (0.60g)
Heavier than an estimated 41% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 59th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.92g
59th percentile
Cleaner than 41% of websites
✗ Above the median website
vs Median 53% more
vs Target 84% more
DTransfer EfficiencyAction57% efficientFIX
Transfer Efficiency
Action57% efficient
57% efficient
Warning::
Transfer efficiency: 57%
An estimated 1696 KB (43%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1696 KB of unused JavaScript. This wasted data produces 0.39g of unnecessary CO2 per page view.
Total waste: 1696 KB (43% of page weight)
Unused JS 1696 KB
0.39g unnecessary CO2 per visit
Actual transfer 3979 KB
Theoretical minimum 2283 KB
Potential savings 1696 KB (0.39g CO2)
See Deep Analysis sections above for specific optimizations.
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 Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 115 KB (vs 3979 KB first visit). 86 of 89 resources are served from browser cache, saving 0.89g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 0.92g)
First visit
3979 KB
Repeat visit
115 KB
97% reduction on repeat visits
Saving 0.89g CO2 per returning visitor
86 resources served from cache · 3 resources re-downloaded
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.