https://risk-score-1.preview.emergentagent.com
Sustainability
· 7 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
86
GRADE
B
FIX
0
REVIEW
3
PASS
4
INFO
0
Checks
74 PASS 3 REVIEW
CTransfer EfficiencyAction70% efficientREVIEW
Transfer Efficiency
Action70% efficient
70% efficient
Warning::
Transfer efficiency: 70%
An estimated 330 KB (30%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 330 KB of unused JavaScript. This wasted data produces 0.08g of unnecessary CO2 per page view.
Total waste: 330 KB (30% of page weight)
Unused JS 330 KB
0.08g unnecessary CO2 per visit
Actual transfer 1094 KB
Theoretical minimum 763 KB
Potential savings 330 KB (0.08g 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.
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 Load0.25g CO2 per viewPASS
CO2 Per Page Load
0.25g CO2 per view
0.25g CO2 per view
Info::
0.25g CO2 per page view
This page transfers 1.1 MB, producing an estimated 0.25g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.05g, end-user device 0.19g.
Got: 0.25g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 30.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 30.4 kg of CO2 annually — equivalent to charging 3795 smartphones.
Info::
Green hosting reduces data center emissions
0.25g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 85% of websites
Sustainable Web Design model v4 · Page size: 1.1 MB
Your site
0.25g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.05g
End-user device
0.19g
At 10,000 monthly views: Monthly: 2.5 kg · Annual: 30.4 kg · ≈ 3795 smartphone charges
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Google Cloud, CDN: Cloudflare
Info::
Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017
Info::
Cloudflare: 100% renewable energy for global network since 2019
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 Google Cloud✓CDN Cloudflare✓
Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 10 KB (vs 1094 KB first visit). 11 of 12 resources are served from browser cache, saving 0.25g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.25g)
First visit
1094 KB
Repeat visit
10 KB
99% reduction on repeat visits
Saving 0.25g CO2 per returning visitor
11 resources served from cache · 1 resources re-downloaded
ACarbon Budget15th percentilePASS
Carbon Budget
15th percentile
15th percentile
Info::
0.25g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 85% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 15th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.25g
15th percentile
Cleaner than 85% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 58% cleaner ✓
vs Target 49% cleaner ✓
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.