https://sitiscommesse.org
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
90
GRADE
A
FIX
1
REVIEW
1
PASS
5
INFO
1
Checks
85 PASS 1 REVIEW 1 FIX
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 Apache HTTP Server✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
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 Load0.13g CO2 per viewPASS
CO2 Per Page Load
0.13g CO2 per view
0.13g CO2 per view
Info::
0.13g CO2 per page view
This page transfers 0.5 MB, producing an estimated 0.13g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.02g, end-user device 0.08g.
Got: 0.13g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 15.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 15.4 kg of CO2 annually — equivalent to charging 1930 smartphones.
0.13g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 90% of websites
Sustainable Web Design model v4 · Page size: 0.5 MB
Your site
0.13g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.02g
End-user device
0.08g
At 10,000 monthly views: Monthly: 1.3 kg · Annual: 15.4 kg · ≈ 1930 smartphone charges
A+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 15 KB (vs 465 KB first visit). 61 of 62 resources are served from browser cache, saving 0.12g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.13g)
First visit
465 KB
Repeat visit
15 KB
97% reduction on repeat visits
Saving 0.12g CO2 per returning visitor
61 resources served from cache · 1 resources re-downloaded
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.13g 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
0.13g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 79% cleaner ✓
vs Target 74% cleaner ✓
A+Transfer Efficiency100% efficientPASS
Transfer Efficiency
100% efficient
100% efficient
Info::
Transfer efficiency: 100%
Only 0 KB of potential savings identified. Your page is well-optimized for size.
Actual transfer 465 KB
Theoretical minimum 465 KB
See Deep Analysis sections above for specific optimizations.
A+Web Font Weight Variants1 font weights loaded across 1 famil(y/ies) -- reasonablePASS
Web Font Weight Variants
1 font weights loaded across 1 famil(y/ies) -- reasonable
1 font weights loaded across 1 famil(y/ies) -- reasonable
Info::
1 font weight(s) loaded across 1 famil(y/ies)
Image Optimization39 images, 229 KB total, 209 KB wastedINFO
Image Optimization
39 images, 229 KB total, 209 KB wasted
Image Optimization Audit
Total Images
39
Total Size
229 KB
Oversized
2
Wasted
209 KB
12 missing dimensions 33 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.