https://Brickderby.com
Sustainability
· 8 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
1
PASS
4
INFO
1
Checks
84 PASS 1 REVIEW 2 FIX
FCO2 Per Page LoadAction1.59g CO2 per viewFIX
CO2 Per Page Load
Action1.59g CO2 per view
1.59g CO2 per view
Warning::
1.59g CO2 per page view
This page transfers 6.7 MB, producing an estimated 1.59g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.33g, end-user device 1.22g.
Got: 1.59g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 190.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 190.8 kg of CO2 annually — equivalent to charging 23850 smartphones.
Info::
Green hosting reduces data center emissions
1.59g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 22% of websites
Sustainable Web Design model v4 · Page size: 6.7 MB
Your site
1.59g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.04g
Network
0.33g
End-user device
1.22g
At 10,000 monthly views: Monthly: 15.9 kg · Annual: 190.8 kg · ≈ 23850 smartphone charges
FCarbon BudgetAction78th percentileFIX
Carbon Budget
Action78th percentile
78th percentile
Warning::
1.59g CO2 — above the median website (0.60g)
Heavier than an estimated 22% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 78th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.59g
78th percentile
Cleaner than 22% of websites
✗ Above the median website
vs Median 165% more
vs Target 218% 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.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Remix, CDN: Cloudflare
Info::
Remix: Verified by the Green Web Foundation
Info::
Cloudflare: 100% renewable energy for global network since 2019
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 Remix✓CDN Cloudflare✓
Remix: Verified by the Green Web Foundation
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 179 KB (vs 6879 KB first visit). 71 of 74 resources are served from browser cache, saving 1.55g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 1.59g)
First visit
6879 KB
Repeat visit
179 KB
97% reduction on repeat visits
Saving 1.55g CO2 per returning visitor
71 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency98% efficientPASS
Transfer Efficiency
98% efficient
98% efficient
Info::
Transfer efficiency: 98%
Only 140 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 140 KB (2% of page weight)
Unused JS 140 KB
0.03g unnecessary CO2 per visit
Actual transfer 6879 KB
Theoretical minimum 6738 KB
Potential savings 140 KB (0.03g CO2)
See Deep Analysis sections above for specific optimizations.
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 Optimization13 images, 706 KB total, 457 KB wastedINFO
Image Optimization
13 images, 706 KB total, 457 KB wasted
Image Optimization Audit
Total Images
13
Total Size
706 KB
Oversized
8
Wasted
457 KB
8 missing dimensions 8 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.