https://wp.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
70
GRADE
C
FIX
2
REVIEW
3
PASS
1
INFO
0
Checks
61 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 BudgetAction51th percentileFIX
Carbon Budget
Action51th percentile
51th percentile
Warning::
0.66g CO2 — above the median website (0.60g)
Heavier than an estimated 49% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 51th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.66g
51st percentile
Cleaner than 49% of websites
✗ Above the median website
vs Median 11% more
vs Target 33% more
BCO2 Per Page Load0.66g CO2 per viewREVIEW
CO2 Per Page Load
0.66g CO2 per view
0.66g CO2 per view
Info::
0.66g CO2 per page view
This page transfers 2.3 MB, producing an estimated 0.66g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.12g, network 0.11g, end-user device 0.43g.
Got: 0.66g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 79.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 79.7 kg of CO2 annually — equivalent to charging 9957 smartphones.
0.66g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 49% of websites
Sustainable Web Design model v4 · Page size: 2.3 MB
Your site
0.66g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.12g
Network
0.11g
End-user device
0.43g
At 10,000 monthly views: Monthly: 6.6 kg · Annual: 79.7 kg · ≈ 9957 smartphone charges
BTransfer Efficiency88% efficientREVIEW
Transfer Efficiency
88% efficient
88% efficient
Info::
Transfer efficiency: 88%
An estimated 279 KB (12%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 279 KB of unused JavaScript. This wasted data produces 0.08g of unnecessary CO2 per page view.
Total waste: 279 KB (12% of page weight)
Unused JS 279 KB
0.08g unnecessary CO2 per visit
Actual transfer 2400 KB
Theoretical minimum 2120 KB
Potential savings 279 KB (0.08g 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 60 KB (vs 2400 KB first visit). 72 of 73 resources are served from browser cache, saving 0.65g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.66g)
First visit
2400 KB
Repeat visit
60 KB
97% reduction on repeat visits
Saving 0.65g CO2 per returning visitor
72 resources served from cache · 1 resources re-downloaded
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.