https://baomoi.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
71
GRADE
C
FIX
3
REVIEW
3
PASS
1
INFO
1
Checks
81 PASS 3 REVIEW 3 FIX
DCO2 Per Page LoadAction0.96g CO2 per viewFIX
CO2 Per Page Load
Action0.96g CO2 per view
0.96g CO2 per view
Info::
0.96g CO2 per page view
This page transfers 3.4 MB, producing an estimated 0.96g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.18g, network 0.17g, end-user device 0.62g.
Got: 0.96g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 115.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 115.4 kg of CO2 annually — equivalent to charging 14424 smartphones.
0.96g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 40% of websites
Sustainable Web Design model v4 · Page size: 3.4 MB
Your site
0.96g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.18g
Network
0.17g
End-user device
0.62g
At 10,000 monthly views: Monthly: 9.6 kg · Annual: 115.4 kg · ≈ 14424 smartphone charges
DGreen HostingActionNot greenFIX
Green Hosting
ActionNot green
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
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 HostingNot Green Hosted
Hosting Next.js✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction60th percentileFIX
Carbon Budget
Action60th percentile
60th percentile
Warning::
0.96g CO2 — above the median website (0.60g)
Heavier than an estimated 40% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 60th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.96g
60th percentile
Cleaner than 40% of websites
✗ Above the median website
vs Median 60% more
vs Target 92% more
CTransfer EfficiencyAction75% efficientREVIEW
Transfer Efficiency
Action75% efficient
75% efficient
Warning::
Transfer efficiency: 75%
An estimated 883 KB (25%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 883 KB of unused JavaScript. This wasted data produces 0.24g of unnecessary CO2 per page view.
Total waste: 883 KB (25% of page weight)
Unused JS 883 KB
0.24g unnecessary CO2 per visit
Actual transfer 3477 KB
Theoretical minimum 2593 KB
Potential savings 883 KB (0.24g CO2)
See Deep Analysis sections above for specific optimizations.
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Repeat Visit Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 67 KB (vs 3477 KB first visit). 206 of 208 resources are served from browser cache, saving 0.94g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.96g)
First visit
3477 KB
Repeat visit
67 KB
98% reduction on repeat visits
Saving 0.94g CO2 per returning visitor
206 resources served from cache · 2 resources re-downloaded
Image Optimization200 images, 0 KB total, 0 KB wastedINFO
Image Optimization
200 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
200
Total Size
0 KB
Oversized
24
101 missing dimensions 197 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.