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
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
FCO2 Per Page LoadAction2.33g CO2 per viewFIX
CO2 Per Page Load
Action2.33g CO2 per view
2.33g CO2 per view
Critical::
2.33g CO2 per page view
This page transfers 9.9 MB, producing an estimated 2.33g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.06g, network 0.48g, end-user device 1.79g.
Got: 2.33g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 279.9 kg CO2/year
With 10,000 page views per month, this page would generate approximately 279.9 kg of CO2 annually — equivalent to charging 34992 smartphones.
Info::
Green hosting reduces data center emissions
2.33g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 9.9 MB
Your site
2.33g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.06g
Network
0.48g
End-user device
1.79g
At 10,000 monthly views: Monthly: 23.3 kg · Annual: 279.9 kg · ≈ 34992 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
2.33g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
2.33g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 289% more
vs Target 367% 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+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 Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 245 KB (vs 10092 KB first visit). 250 of 253 resources are served from browser cache, saving 2.28g CO2 per repeat visit.
Info::
Repeat visit: 0.06g CO2 (first visit: 2.33g)
First visit
10092 KB
Repeat visit
245 KB
98% reduction on repeat visits
Saving 2.28g CO2 per returning visitor
250 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency98% efficientPASS
Transfer Efficiency
98% efficient
98% efficient
Info::
Transfer efficiency: 98%
Only 190 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 190 KB (2% of page weight)
Unused JS 190 KB
0.04g unnecessary CO2 per visit
Actual transfer 10092 KB
Theoretical minimum 9901 KB
Potential savings 190 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.