https://Ssa.gov
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
75
GRADE
C
FIX
1
REVIEW
5
PASS
1
INFO
1
Checks
81 PASS 5 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 Acquia Cloud Platform✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
BCO2 Per Page Load0.54g CO2 per viewREVIEW
CO2 Per Page Load
0.54g CO2 per view
0.54g CO2 per view
Info::
0.54g CO2 per page view
This page transfers 1.9 MB, producing an estimated 0.54g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.10g, network 0.09g, end-user device 0.35g.
Got: 0.54g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 64.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 64.5 kg of CO2 annually — equivalent to charging 8063 smartphones.
0.54g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 57% of websites
Sustainable Web Design model v4 · Page size: 1.9 MB
Your site
0.54g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.10g
Network
0.09g
End-user device
0.35g
At 10,000 monthly views: Monthly: 5.4 kg · Annual: 64.5 kg · ≈ 8063 smartphone charges
BCarbon Budget43th percentileREVIEW
Carbon Budget
43th percentile
43th percentile
Info::
0.54g CO2 — below the median website (0.60g)
Better than an estimated 57% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
Info::
Estimated 43th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.54g
43rd percentile
Cleaner than 57% of websites
✗ Above the median website
vs Median 10% cleaner ✓
vs Target 8% more
BTransfer Efficiency75% efficientREVIEW
Transfer Efficiency
75% efficient
75% efficient
Info::
Transfer efficiency: 75%
An estimated 481 KB (25%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 481 KB of unused JavaScript. This wasted data produces 0.13g of unnecessary CO2 per page view.
Total waste: 481 KB (25% of page weight)
Unused JS 481 KB
0.13g unnecessary CO2 per visit
Actual transfer 1943 KB
Theoretical minimum 1462 KB
Potential savings 481 KB (0.13g 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
A+Repeat Visit Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 32 KB (vs 1943 KB first visit). 72 of 74 resources are served from browser cache, saving 0.53g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.54g)
First visit
1943 KB
Repeat visit
32 KB
98% reduction on repeat visits
Saving 0.53g CO2 per returning visitor
72 resources served from cache · 2 resources re-downloaded
Image Optimization32 images, 513 KB total, 384 KB wastedINFO
Image Optimization
32 images, 513 KB total, 384 KB wasted
Image Optimization Audit
Total Images
32
Total Size
513 KB
Oversized
4
Wasted
384 KB
11 missing alt text 12 missing dimensions 10 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.