https://Giocodigitale.it
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
83
GRADE
B
FIX
1
REVIEW
3
PASS
3
INFO
1
Checks
83 PASS 3 REVIEW 1 FIX
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
Unknown
Info::
Hosting provider could not be identified
Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their 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 HostingUnable to Determine
Hosting Not identified✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
CTransfer EfficiencyAction67% efficientREVIEW
Transfer Efficiency
Action67% efficient
67% efficient
Warning::
Transfer efficiency: 67%
An estimated 23 KB (33%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 23 KB of unused JavaScript. This wasted data produces 0.01g of unnecessary CO2 per page view.
Total waste: 23 KB (33% of page weight)
Unused JS 23 KB
0.01g unnecessary CO2 per visit
Actual transfer 70 KB
Theoretical minimum 47 KB
Potential savings 23 KB (0.01g 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+CO2 Per Page Load0.02g CO2 per viewPASS
CO2 Per Page Load
0.02g CO2 per view
0.02g CO2 per view
Info::
0.02g CO2 per page view
This page transfers 0.1 MB, producing an estimated 0.02g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.00g, network 0.00g, end-user device 0.01g.
Got: 0.02g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 2.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 2.4 kg of CO2 annually — equivalent to charging 293 smartphones.
0.02g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 90% of websites
Sustainable Web Design model v4 · Page size: 0.1 MB
Your site
0.02g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.00g
Network
0.00g
End-user device
0.01g
At 10,000 monthly views: Monthly: 0.2 kg · Annual: 2.4 kg · ≈ 293 smartphone charges
A+Repeat Visit Weight90% cachedPASS
Repeat Visit Weight
90% cached
90% cached
Info::
90% reduction on repeat visits
Returning visitors download only 6 KB (vs 70 KB first visit). 9 of 10 resources are served from browser cache, saving 0.02g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.02g)
First visit
70 KB
Repeat visit
6 KB
90% reduction on repeat visits
Saving 0.02g CO2 per returning visitor
9 resources served from cache · 1 resources re-downloaded
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.02g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 90% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 10th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.02g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 97% cleaner ✓
vs Target 96% cleaner ✓
Image Optimization3 images, 21 KB total, 0 KB wastedINFO
Image Optimization
3 images, 21 KB total, 0 KB wasted
Image Optimization Audit
Total Images
3
Total Size
21 KB
1 missing alt text 2 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.