https://impactcommerce.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
61
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
FCO2 Per Page LoadAction5.45g CO2 per viewFIX
CO2 Per Page Load
Action5.45g CO2 per view
5.45g CO2 per view
Critical::
5.45g CO2 per page view
This page transfers 19.3 MB, producing an estimated 5.45g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 1.01g, network 0.94g, end-user device 3.50g.
Got: 5.45g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 654.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 654.5 kg of CO2 annually — equivalent to charging 81809 smartphones.
5.45g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 19.3 MB
Your site
5.45g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
1.01g
Network
0.94g
End-user device
3.50g
At 10,000 monthly views: Monthly: 54.5 kg · Annual: 654.5 kg · ≈ 81809 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::
5.45g 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
5.45g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 809% more
vs Target 991% more
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.
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 Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 28 KB (vs 19720 KB first visit). 40 of 42 resources are served from browser cache, saving 5.45g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 5.45g)
First visit
19720 KB
Repeat visit
28 KB
100% reduction on repeat visits
Saving 5.45g CO2 per returning visitor
40 resources served from cache · 2 resources re-downloaded
A+Transfer Efficiency98% efficientPASS
Transfer Efficiency
98% efficient
98% efficient
Info::
Transfer efficiency: 98%
Only 453 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 453 KB (2% of page weight)
Unused JS 453 KB
0.13g unnecessary CO2 per visit
Actual transfer 19720 KB
Theoretical minimum 19267 KB
Potential savings 453 KB (0.13g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization23 images, 0 KB total, 0 KB wastedINFO
Image Optimization
23 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
23
Total Size
0 KB
23 missing alt text 23 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.