https://www.henrycountyva.gov
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
65
GRADE
D
FIX
3
REVIEW
3
PASS
1
INFO
1
Checks
81 PASS 3 REVIEW 3 FIX
DCO2 Per Page LoadAction1.13g CO2 per viewFIX
CO2 Per Page Load
Action1.13g CO2 per view
1.13g CO2 per view
Warning::
1.13g CO2 per page view
This page transfers 4.0 MB, producing an estimated 1.13g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.21g, network 0.19g, end-user device 0.72g.
Got: 1.13g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 135.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 135.2 kg of CO2 annually — equivalent to charging 16905 smartphones.
1.13g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 35% of websites
Sustainable Web Design model v4 · Page size: 4.0 MB
Your site
1.13g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.21g
Network
0.19g
End-user device
0.72g
At 10,000 monthly views: Monthly: 11.3 kg · Annual: 135.2 kg · ≈ 16905 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::
Azure: Microsoft is carbon-negative; Azure renewable varies by region
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 Azure✗CDN Not identified✗
Azure: Microsoft is carbon-negative; Azure renewable varies by region
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction65th percentileFIX
Carbon Budget
Action65th percentile
65th percentile
Warning::
1.13g CO2 — above the median website (0.60g)
Heavier than an estimated 35% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 65th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.13g
65th percentile
Cleaner than 35% of websites
✗ Above the median website
vs Median 88% more
vs Target 125% more
BTransfer Efficiency87% efficientREVIEW
Transfer Efficiency
87% efficient
87% efficient
Info::
Transfer efficiency: 87%
An estimated 531 KB (13%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 531 KB of unused JavaScript. This wasted data produces 0.15g of unnecessary CO2 per page view.
Total waste: 531 KB (13% of page weight)
Unused JS 531 KB
0.15g unnecessary CO2 per visit
Actual transfer 4075 KB
Theoretical minimum 3543 KB
Potential savings 531 KB (0.15g CO2)
See Deep Analysis sections above for specific optimizations.
CWeb Font Weight VariantsAction13 font weights loaded across 2 famil(y/ies)REVIEW
Web Font Weight Variants
Action13 font weights loaded across 2 famil(y/ies)
13 font weights loaded across 2 famil(y/ies)
Warning::
13 font weights loaded -- likely 100+ KB of unused payload
Loading 13 font weights typically transfers 200-400 KB just for fonts. Most pages legitimately use 2-3 weights (regular + bold, maybe medium). Audit which weights your stylesheet actually applies and trim the Google Fonts URL accordingly. Affected families: Lato, Muli.
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 Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 68 KB (vs 4075 KB first visit). 117 of 122 resources are served from browser cache, saving 1.11g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 1.13g)
First visit
4075 KB
Repeat visit
68 KB
98% reduction on repeat visits
Saving 1.11g CO2 per returning visitor
117 resources served from cache · 5 resources re-downloaded
Image Optimization26 images, 2928 KB total, 1337 KB wastedINFO
Image Optimization
26 images, 2928 KB total, 1337 KB wasted
Image Optimization Audit
Total Images
26
Total Size
2928 KB
Oversized
11
Wasted
1337 KB
25 missing dimensions 17 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.