https://www.reteassociazioni.it
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
78
GRADE
C
FIX
1
REVIEW
4
PASS
2
INFO
1
Checks
82 PASS 4 REVIEW 1 FIX
DCarbon BudgetAction53th percentileFIX
Carbon Budget
Action53th percentile
53th percentile
Warning::
0.71g CO2 — above the median website (0.60g)
Heavier than an estimated 47% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 53th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.71g
53rd percentile
Cleaner than 47% of websites
✗ Above the median website
vs Median 19% more
vs Target 43% more
BCO2 Per Page Load0.71g CO2 per viewREVIEW
CO2 Per Page Load
0.71g CO2 per view
0.71g CO2 per view
Info::
0.71g CO2 per page view
This page transfers 3.0 MB, producing an estimated 0.71g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.15g, end-user device 0.55g.
Got: 0.71g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 85.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 85.7 kg of CO2 annually — equivalent to charging 10716 smartphones.
Info::
Green hosting reduces data center emissions
0.71g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 47% of websites
Sustainable Web Design model v4 · Page size: 3.0 MB
Your site
0.71g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.15g
End-user device
0.55g
At 10,000 monthly views: Monthly: 7.1 kg · Annual: 85.7 kg · ≈ 10716 smartphone charges
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
GoDaddy uses renewable energy
Info::
GoDaddy: Verified by the Green Web Foundation
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 GoDaddy✓CDN Not identified✗
GoDaddy: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
BTransfer Efficiency80% efficientREVIEW
Transfer Efficiency
80% efficient
80% efficient
Info::
Transfer efficiency: 80%
An estimated 627 KB (20%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 627 KB of unused JavaScript. This wasted data produces 0.14g of unnecessary CO2 per page view.
Total waste: 627 KB (20% of page weight)
Unused JS 627 KB
0.14g unnecessary CO2 per visit
Actual transfer 3090 KB
Theoretical minimum 2463 KB
Potential savings 627 KB (0.14g 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.
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 28 KB (vs 3090 KB first visit). 72 of 74 resources are served from browser cache, saving 0.71g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.71g)
First visit
3090 KB
Repeat visit
28 KB
99% reduction on repeat visits
Saving 0.71g CO2 per returning visitor
72 resources served from cache · 2 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: OVHcloud
Image Optimization37 images, 650 KB total, 0 KB wastedINFO
Image Optimization
37 images, 650 KB total, 0 KB wasted
Image Optimization Audit
Total Images
37
Total Size
650 KB
29 missing dimensions 36 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.