https://socialwebtv.it
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
75
GRADE
C
FIX
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
FCO2 Per Page LoadAction1.51g CO2 per viewFIX
CO2 Per Page Load
Action1.51g CO2 per view
1.51g CO2 per view
Warning::
1.51g CO2 per page view
This page transfers 6.4 MB, producing an estimated 1.51g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.31g, end-user device 1.16g.
Got: 1.51g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 181.0 kg CO2/year
With 10,000 page views per month, this page would generate approximately 181.0 kg of CO2 annually — equivalent to charging 22625 smartphones.
Info::
Green hosting reduces data center emissions
1.51g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 25% of websites
Sustainable Web Design model v4 · Page size: 6.4 MB
Your site
1.51g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.04g
Network
0.31g
End-user device
1.16g
At 10,000 monthly views: Monthly: 15.1 kg · Annual: 181.0 kg · ≈ 22625 smartphone charges
FCarbon BudgetAction75th percentileFIX
Carbon Budget
Action75th percentile
75th percentile
Warning::
1.51g CO2 — above the median website (0.60g)
Heavier than an estimated 25% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 75th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.51g
75th percentile
Cleaner than 25% of websites
✗ Above the median website
vs Median 151% more
vs Target 202% more
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
AGreen HostingGreen (cdn)PASS
Green Hosting
Green (cdn)
Green (cdn)
Info::
Vercel CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
Info::
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
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 Vercel✓
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 24 KB (vs 6525 KB first visit). 149 of 150 resources are served from browser cache, saving 1.50g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 1.51g)
First visit
6525 KB
Repeat visit
24 KB
100% reduction on repeat visits
Saving 1.50g CO2 per returning visitor
149 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency96% efficientPASS
Transfer Efficiency
96% efficient
96% efficient
Info::
Transfer efficiency: 96%
Only 235 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 235 KB (4% of page weight)
Unused JS 235 KB
0.05g unnecessary CO2 per visit
Actual transfer 6525 KB
Theoretical minimum 6290 KB
Potential savings 235 KB (0.05g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization91 images, 15 KB total, 0 KB wastedINFO
Image Optimization
91 images, 15 KB total, 0 KB wasted
Image Optimization Audit
Total Images
91
Total Size
15 KB
Oversized
10
36 missing dimensions 1 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.