https://radaresportivo.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
71
GRADE
C
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
DCO2 Per Page LoadAction1.20g CO2 per viewFIX
CO2 Per Page Load
Action1.20g CO2 per view
1.20g CO2 per view
Warning::
1.20g CO2 per page view
This page transfers 4.2 MB, producing an estimated 1.20g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.22g, network 0.21g, end-user device 0.77g.
Got: 1.20g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 144.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 144.1 kg of CO2 annually — equivalent to charging 18014 smartphones.
1.20g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 33% of websites
Sustainable Web Design model v4 · Page size: 4.2 MB
Your site
1.20g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.22g
Network
0.21g
End-user device
0.77g
At 10,000 monthly views: Monthly: 12.0 kg · Annual: 144.1 kg · ≈ 18014 smartphone charges
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::
AWS: Renewable energy varies by region; committed to 100% by 2025
Info::
AWS CloudFront: Renewable varies by edge location
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 AWS✗CDN AWS CloudFront✗
AWS: Renewable energy varies by region; committed to 100% by 2025
AWS CloudFront: Renewable varies by edge location
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction67th percentileFIX
Carbon Budget
Action67th percentile
67th percentile
Warning::
1.20g CO2 — above the median website (0.60g)
Heavier than an estimated 33% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 67th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.20g
67th percentile
Cleaner than 33% of websites
✗ Above the median website
vs Median 100% more
vs Target 140% 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
A+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 3 KB (vs 4342 KB first visit). 387 of 388 resources are served from browser cache, saving 1.20g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 1.20g)
First visit
4342 KB
Repeat visit
3 KB
100% reduction on repeat visits
Saving 1.20g CO2 per returning visitor
387 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency91% efficientPASS
Transfer Efficiency
91% efficient
91% efficient
Info::
Transfer efficiency: 91%
Only 404 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 404 KB (9% of page weight)
Unused JS 404 KB
0.11g unnecessary CO2 per visit
Actual transfer 4342 KB
Theoretical minimum 3938 KB
Potential savings 404 KB (0.11g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization6 images, 0 KB total, 0 KB wastedINFO
Image Optimization
6 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
6
Total Size
0 KB
Oversized
1
5 missing dimensions 5 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.