https://etxpsych.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
60
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
FCO2 Per Page LoadAction2.69g CO2 per viewFIX
CO2 Per Page Load
Action2.69g CO2 per view
2.69g CO2 per view
Critical::
2.69g CO2 per page view
This page transfers 9.5 MB, producing an estimated 2.69g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.50g, network 0.47g, end-user device 1.73g.
Got: 2.69g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 323.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 323.4 kg of CO2 annually — equivalent to charging 40424 smartphones.
2.69g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 9.5 MB
Your site
2.69g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.50g
Network
0.47g
End-user device
1.73g
At 10,000 monthly views: Monthly: 26.9 kg · Annual: 323.4 kg · ≈ 40424 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
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
2.69g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
2.69g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 349% more
vs Target 439% more
CWeb Font Weight VariantsAction36 font weights loaded across 2 famil(y/ies)REVIEW
Web Font Weight Variants
Action36 font weights loaded across 2 famil(y/ies)
36 font weights loaded across 2 famil(y/ies)
Warning::
36 font weights loaded -- likely 100+ KB of unused payload
Loading 36 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: Poppins, Roboto.
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 Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 78 KB (vs 9744 KB first visit). 111 of 114 resources are served from browser cache, saving 2.67g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 2.69g)
First visit
9744 KB
Repeat visit
78 KB
99% reduction on repeat visits
Saving 2.67g CO2 per returning visitor
111 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency92% efficientPASS
Transfer Efficiency
92% efficient
92% efficient
Info::
Transfer efficiency: 92%
Only 783 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 783 KB (8% of page weight)
Unused JS 783 KB
0.22g unnecessary CO2 per visit
Actual transfer 9744 KB
Theoretical minimum 8960 KB
Potential savings 783 KB (0.22g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization41 images, 2282 KB total, 1846 KB wastedINFO
Image Optimization
41 images, 2282 KB total, 1846 KB wasted
Image Optimization Audit
Total Images
41
Total Size
2282 KB
Oversized
27
Wasted
1846 KB
24 missing alt text 17 missing dimensions 19 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.