https://www.sanctuaryclothing.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
63
GRADE
D
FIX
2
REVIEW
3
PASS
2
INFO
1
Checks
82 PASS 3 REVIEW 2 FIX
FCO2 Per Page LoadAction3.79g CO2 per viewFIX
CO2 Per Page Load
Action3.79g CO2 per view
3.79g CO2 per view
Critical::
3.79g CO2 per page view
This page transfers 16.0 MB, producing an estimated 3.79g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.09g, network 0.78g, end-user device 2.91g.
Got: 3.79g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 454.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 454.7 kg of CO2 annually — equivalent to charging 56833 smartphones.
Info::
Green hosting reduces data center emissions
3.79g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 16.0 MB
Your site
3.79g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.09g
Network
0.78g
End-user device
2.91g
At 10,000 monthly views: Monthly: 37.9 kg · Annual: 454.7 kg · ≈ 56833 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
3.79g 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
3.79g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 531% more
vs Target 658% more
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
Cloudflare uses renewable energy
Info::
Cloudflare: Verified by the Green Web Foundation
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 Hosting✓ Green Hosted
Hosting Cloudflare✓CDN Shopify✗
Cloudflare: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
BTransfer Efficiency90% efficientREVIEW
Transfer Efficiency
90% efficient
90% efficient
Info::
Transfer efficiency: 90%
An estimated 1643 KB (10%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1643 KB of unused JavaScript. This wasted data produces 0.38g of unnecessary CO2 per page view.
Total waste: 1643 KB (10% of page weight)
Unused JS 1643 KB
0.38g unnecessary CO2 per visit
Actual transfer 16392 KB
Theoretical minimum 14749 KB
Potential savings 1643 KB (0.38g CO2)
See Deep Analysis sections above for specific optimizations.
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.
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 148 KB (vs 16392 KB first visit). 860 of 869 resources are served from browser cache, saving 3.75g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 3.79g)
First visit
16392 KB
Repeat visit
148 KB
99% reduction on repeat visits
Saving 3.75g CO2 per returning visitor
860 resources served from cache · 9 resources re-downloaded
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Image Optimization200 images, 6536 KB total, 125 KB wastedINFO
Image Optimization
200 images, 6536 KB total, 125 KB wasted
Image Optimization Audit
Total Images
200
Total Size
6536 KB
Oversized
1
Wasted
125 KB
8 missing alt text 85 missing dimensions 184 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.