https://Logosdown.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
78
GRADE
C
FIX
2
REVIEW
3
PASS
2
INFO
1
Checks
82 PASS 3 REVIEW 2 FIX
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
Unknown
Info::
Hosting provider could not be identified
Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments.
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 HostingUnable to Determine
Hosting Not identified✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction52th percentileFIX
Carbon Budget
Action52th percentile
52th percentile
Warning::
0.67g CO2 — above the median website (0.60g)
Heavier than an estimated 48% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 52th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.67g
52nd percentile
Cleaner than 48% of websites
✗ Above the median website
vs Median 12% more
vs Target 35% more
BCO2 Per Page Load0.67g CO2 per viewREVIEW
CO2 Per Page Load
0.67g CO2 per view
0.67g CO2 per view
Info::
0.67g CO2 per page view
This page transfers 2.4 MB, producing an estimated 0.67g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.12g, network 0.12g, end-user device 0.43g.
Got: 0.67g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 80.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 80.8 kg of CO2 annually — equivalent to charging 10100 smartphones.
0.67g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 48% of websites
Sustainable Web Design model v4 · Page size: 2.4 MB
Your site
0.67g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.12g
Network
0.12g
End-user device
0.43g
At 10,000 monthly views: Monthly: 6.7 kg · Annual: 80.8 kg · ≈ 10100 smartphone charges
CWeb Font Weight VariantsAction31 font weights loaded across 8 famil(y/ies)REVIEW
Web Font Weight Variants
Action31 font weights loaded across 8 famil(y/ies)
31 font weights loaded across 8 famil(y/ies)
Warning::
31 font weights loaded -- likely 100+ KB of unused payload
Loading 31 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: Archivo, Google%20Sans%20Text%3A400%2C500, Google%20Sans%20Text%3A400%2C500%2C700, Google%20Sans%3A400, Google%20Sans%3A700, Google%20Symbols%3Aopsz%2Cwght%2CFILL%2CGRAD%4020..48%2C100..700%2C0..1%2C-50..200, Poppins, Roboto%3A500.
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 Weight93% cachedPASS
Repeat Visit Weight
93% cached
93% cached
Info::
93% reduction on repeat visits
Returning visitors download only 164 KB (vs 2434 KB first visit). 115 of 122 resources are served from browser cache, saving 0.63g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 0.67g)
First visit
2434 KB
Repeat visit
164 KB
93% reduction on repeat visits
Saving 0.63g CO2 per returning visitor
115 resources served from cache · 7 resources re-downloaded
A+Transfer Efficiency92% efficientPASS
Transfer Efficiency
92% efficient
92% efficient
Info::
Transfer efficiency: 92%
Only 199 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 199 KB (8% of page weight)
Unused JS 199 KB
0.06g unnecessary CO2 per visit
Actual transfer 2434 KB
Theoretical minimum 2235 KB
Potential savings 199 KB (0.06g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization3 images, 127 KB total, 94 KB wastedINFO
Image Optimization
3 images, 127 KB total, 94 KB wasted
Image Optimization Audit
Total Images
3
Total Size
127 KB
Oversized
1
Wasted
94 KB
1 missing dimensions
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.