https://viadeo.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
62
GRADE
D
FIX
4
REVIEW
1
PASS
1
INFO
0
Checks
61 PASS 1 REVIEW 4 FIX
DCO2 Per Page LoadAction0.94g CO2 per viewFIX
CO2 Per Page Load
Action0.94g CO2 per view
0.94g CO2 per view
Info::
0.94g CO2 per page view
This page transfers 3.3 MB, producing an estimated 0.94g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.17g, network 0.16g, end-user device 0.60g.
Got: 0.94g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 112.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 112.3 kg of CO2 annually — equivalent to charging 14042 smartphones.
0.94g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 41% of websites
Sustainable Web Design model v4 · Page size: 3.3 MB
Your site
0.94g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.17g
Network
0.16g
End-user device
0.60g
At 10,000 monthly views: Monthly: 9.4 kg · Annual: 112.3 kg · ≈ 14042 smartphone charges
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 BudgetAction59th percentileFIX
Carbon Budget
Action59th percentile
59th percentile
Warning::
0.94g CO2 — above the median website (0.60g)
Heavier than an estimated 41% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 59th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.94g
59th percentile
Cleaner than 41% of websites
✗ Above the median website
vs Median 56% more
vs Target 87% more
DTransfer EfficiencyAction52% efficientFIX
Transfer Efficiency
Action52% efficient
52% efficient
Warning::
Transfer efficiency: 52%
An estimated 1614 KB (48%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1614 KB of unused JavaScript. This wasted data produces 0.45g of unnecessary CO2 per page view.
Total waste: 1614 KB (48% of page weight)
Unused JS 1614 KB
0.45g unnecessary CO2 per visit
Actual transfer 3385 KB
Theoretical minimum 1770 KB
Potential savings 1614 KB (0.45g CO2)
See Deep Analysis sections above for specific optimizations.
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 Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 114 KB (vs 3385 KB first visit). 312 of 333 resources are served from browser cache, saving 0.90g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 0.94g)
First visit
3385 KB
Repeat visit
114 KB
97% reduction on repeat visits
Saving 0.90g CO2 per returning visitor
312 resources served from cache · 21 resources re-downloaded
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.