https://raicultura.it
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
58
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
FCO2 Per Page LoadAction4.99g CO2 per viewFIX
CO2 Per Page Load
Action4.99g CO2 per view
4.99g CO2 per view
Critical::
4.99g CO2 per page view
This page transfers 17.6 MB, producing an estimated 4.99g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.92g, network 0.86g, end-user device 3.21g.
Got: 4.99g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 599.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 599.2 kg of CO2 annually — equivalent to charging 74901 smartphones.
4.99g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 17.6 MB
Your site
4.99g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.92g
Network
0.86g
End-user device
3.21g
At 10,000 monthly views: Monthly: 49.9 kg · Annual: 599.2 kg · ≈ 74901 smartphone charges
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
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
4.99g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
4.99g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 732% more
vs Target 899% more
CWeb Font Weight VariantsAction12 font weights loaded across 2 famil(y/ies)REVIEW
Web Font Weight Variants
Action12 font weights loaded across 2 famil(y/ies)
12 font weights loaded across 2 famil(y/ies)
Warning::
12 font weights loaded -- likely 100+ KB of unused payload
Loading 12 font weights typically transfers 200-400 KB just for fonts. Most pages legitimately use 2-3 weights (regular + bold, maybe medium). Audit which weights your stylesheet actually applies and trim the Google Fonts URL accordingly. Affected families: Montserrat, Open Sans.
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 Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 41 KB (vs 18055 KB first visit). 277 of 279 resources are served from browser cache, saving 4.98g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 4.99g)
First visit
18055 KB
Repeat visit
41 KB
100% reduction on repeat visits
Saving 4.98g CO2 per returning visitor
277 resources served from cache · 2 resources re-downloaded
A+Transfer Efficiency98% efficientPASS
Transfer Efficiency
98% efficient
98% efficient
Info::
Transfer efficiency: 98%
Only 372 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 372 KB (2% of page weight)
Unused JS 372 KB
0.10g unnecessary CO2 per visit
Actual transfer 18055 KB
Theoretical minimum 17683 KB
Potential savings 372 KB (0.10g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization200 images, 13508 KB total, 12775 KB wastedINFO
Image Optimization
200 images, 13508 KB total, 12775 KB wasted
Image Optimization Audit
Total Images
200
Total Size
13508 KB
Oversized
184
Wasted
12775 KB
200 missing dimensions 177 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.