https://www.jurellsmith.com
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
0
REVIEW
3
PASS
4
INFO
1
Checks
84 PASS 3 REVIEW
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 8% cleaner ✓
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 Load0.46g 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 1.9 MB, producing an estimated 0.46g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.10g, end-user device 0.35g.
Got: 0.46g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 55.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 55.3 kg of CO2 annually — equivalent to charging 6907 smartphones.
Info::
Green hosting reduces data center emissions
0.46g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 64% of websites
Sustainable Web Design model v4 · Page size: 1.9 MB
Your site
0.46g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.10g
End-user device
0.35g
At 10,000 monthly views: Monthly: 4.6 kg · Annual: 55.3 kg · ≈ 6907 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: Fastly
Info::
Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017
Info::
Fastly: 100% renewable energy for edge network
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 Fastly✓
Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017
Fastly: 100% renewable energy for edge network
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight90% cachedPASS
Repeat Visit Weight
90% cached
90% cached
Info::
90% reduction on repeat visits
Returning visitors download only 196 KB (vs 1992 KB first visit). 224 of 226 resources are served from browser cache, saving 0.42g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 0.46g)
First visit
1992 KB
Repeat visit
196 KB
90% reduction on repeat visits
Saving 0.42g CO2 per returning visitor
224 resources served from cache · 2 resources re-downloaded
A+Transfer Efficiency92% efficientPASS
Transfer Efficiency
92% efficient
92% efficient
Info::
Transfer efficiency: 92%
Only 167 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 167 KB (8% of page weight)
Unused JS 167 KB
0.04g unnecessary CO2 per visit
Actual transfer 1992 KB
Theoretical minimum 1824 KB
Potential savings 167 KB (0.04g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization28 images, 129 KB total, 0 KB wastedINFO
Image Optimization
28 images, 129 KB total, 0 KB wasted
Image Optimization Audit
Total Images
28
Total Size
129 KB
24 missing dimensions 1 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.