https://www.madcoinvlog.de
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
81
GRADE
B
FIX
0
REVIEW
5
PASS
2
INFO
1
Checks
82 PASS 5 REVIEW
BCO2 Per Page Load0.56g CO2 per viewREVIEW
CO2 Per Page Load
0.56g CO2 per view
0.56g CO2 per view
Info::
0.56g CO2 per page view
This page transfers 2.4 MB, producing an estimated 0.56g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.12g, end-user device 0.43g.
Got: 0.56g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 66.9 kg CO2/year
With 10,000 page views per month, this page would generate approximately 66.9 kg of CO2 annually — equivalent to charging 8361 smartphones.
Info::
Green hosting reduces data center emissions
0.56g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 55% of websites
Sustainable Web Design model v4 · Page size: 2.4 MB
Your site
0.56g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.12g
End-user device
0.43g
At 10,000 monthly views: Monthly: 5.6 kg · Annual: 66.9 kg · ≈ 8361 smartphone charges
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
OpenGSE uses renewable energy
Info::
OpenGSE: Verified by the Green Web Foundation
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 OpenGSE✓CDN Not identified✗
OpenGSE: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
BCarbon Budget45th percentileREVIEW
Carbon Budget
45th percentile
45th percentile
Info::
0.56g CO2 — below the median website (0.60g)
Better than an estimated 55% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
Info::
Estimated 45th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.56g
45th percentile
Cleaner than 55% of websites
✗ Above the median website
vs Median 7% cleaner ✓
vs Target 11% more
BTransfer Efficiency79% efficientREVIEW
Transfer Efficiency
79% efficient
79% efficient
Info::
Transfer efficiency: 79%
An estimated 512 KB (21%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 512 KB of unused JavaScript. This wasted data produces 0.12g of unnecessary CO2 per page view.
Total waste: 512 KB (21% of page weight)
Unused JS 512 KB
0.12g unnecessary CO2 per visit
Actual transfer 2411 KB
Theoretical minimum 1899 KB
Potential savings 512 KB (0.12g 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.
A+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 65 KB (vs 2411 KB first visit). 152 of 160 resources are served from browser cache, saving 0.54g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.56g)
First visit
2411 KB
Repeat visit
65 KB
97% reduction on repeat visits
Saving 0.54g CO2 per returning visitor
152 resources served from cache · 8 resources re-downloaded
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Google Cloud
Image Optimization33 images, 0 KB total, 0 KB wastedINFO
Image Optimization
33 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
33
Total Size
0 KB
16 missing alt text 22 missing dimensions 21 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.