https://freep.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
79
GRADE
C
FIX
1
REVIEW
2
PASS
3
INFO
0
Checks
63 PASS 2 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 Amazon Web Services✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
BCarbon Budget36th percentileREVIEW
Carbon Budget
36th percentile
36th percentile
Info::
0.46g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 64% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 36th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.46g
36th percentile
Cleaner than 64% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 23% cleaner ✓
vs Target 7% cleaner ✓
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
ACO2 Per Page Load0.46g CO2 per viewPASS
CO2 Per Page Load
0.46g CO2 per view
0.46g CO2 per view
Info::
0.46g CO2 per page view
This page transfers 1.6 MB, producing an estimated 0.46g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.09g, network 0.08g, end-user device 0.30g.
Got: 0.46g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 55.6 kg CO2/year
With 10,000 page views per month, this page would generate approximately 55.6 kg of CO2 annually — equivalent to charging 6947 smartphones.
0.46g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 64% of websites
Sustainable Web Design model v4 · Page size: 1.6 MB
Your site
0.46g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.09g
Network
0.08g
End-user device
0.30g
At 10,000 monthly views: Monthly: 4.6 kg · Annual: 55.6 kg · ≈ 6947 smartphone charges
A+Repeat Visit Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 35 KB (vs 1674 KB first visit). 158 of 159 resources are served from browser cache, saving 0.45g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.46g)
First visit
1674 KB
Repeat visit
35 KB
98% reduction on repeat visits
Saving 0.45g CO2 per returning visitor
158 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency93% efficientPASS
Transfer Efficiency
93% efficient
93% efficient
Info::
Transfer efficiency: 93%
Only 108 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 108 KB (7% of page weight)
Unused JS 108 KB
0.03g unnecessary CO2 per visit
Actual transfer 1674 KB
Theoretical minimum 1565 KB
Potential savings 108 KB (0.03g CO2)
See Deep Analysis sections above for specific optimizations.
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.