https://mirandawater.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
71
GRADE
C
FIX
2
REVIEW
4
PASS
1
INFO
1
Checks
81 PASS 4 REVIEW 2 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 Apache HTTP Server✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction55th percentileFIX
Carbon Budget
Action55th percentile
55th percentile
Warning::
0.78g CO2 — above the median website (0.60g)
Heavier than an estimated 45% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 55th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.78g
55th percentile
Cleaner than 45% of websites
✗ Above the median website
vs Median 30% more
vs Target 57% more
BCO2 Per Page Load0.78g CO2 per viewREVIEW
CO2 Per Page Load
0.78g CO2 per view
0.78g CO2 per view
Info::
0.78g CO2 per page view
This page transfers 2.8 MB, producing an estimated 0.78g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.14g, network 0.14g, end-user device 0.50g.
Got: 0.78g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 93.9 kg CO2/year
With 10,000 page views per month, this page would generate approximately 93.9 kg of CO2 annually — equivalent to charging 11741 smartphones.
0.78g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 45% of websites
Sustainable Web Design model v4 · Page size: 2.8 MB
Your site
0.78g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.14g
Network
0.14g
End-user device
0.50g
At 10,000 monthly views: Monthly: 7.8 kg · Annual: 93.9 kg · ≈ 11741 smartphone charges
BTransfer Efficiency78% efficientREVIEW
Transfer Efficiency
78% efficient
78% efficient
Info::
Transfer efficiency: 78%
An estimated 619 KB (22%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 619 KB of unused JavaScript. This wasted data produces 0.17g of unnecessary CO2 per page view.
Total waste: 619 KB (22% of page weight)
Unused JS 619 KB
0.17g unnecessary CO2 per visit
Actual transfer 2830 KB
Theoretical minimum 2210 KB
Potential savings 619 KB (0.17g 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 Weight94% cachedPASS
Repeat Visit Weight
94% cached
94% cached
Info::
94% reduction on repeat visits
Returning visitors download only 171 KB (vs 2830 KB first visit). 76 of 79 resources are served from browser cache, saving 0.74g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 0.78g)
First visit
2830 KB
Repeat visit
171 KB
94% reduction on repeat visits
Saving 0.74g CO2 per returning visitor
76 resources served from cache · 3 resources re-downloaded
Image Optimization36 images, 79 KB total, 56 KB wastedINFO
Image Optimization
36 images, 79 KB total, 56 KB wasted
Image Optimization Audit
Total Images
36
Total Size
79 KB
Oversized
1
Wasted
56 KB
28 missing dimensions 34 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.