https://houseofwebhin.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
69
GRADE
D
FIX
2
REVIEW
1
PASS
4
INFO
1
Checks
84 PASS 1 REVIEW 2 FIX
FCO2 Per Page LoadAction4.35g CO2 per viewFIX
CO2 Per Page Load
Action4.35g CO2 per view
4.35g CO2 per view
Critical::
4.35g CO2 per page view
This page transfers 18.4 MB, producing an estimated 4.35g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.11g, network 0.90g, end-user device 3.34g.
Got: 4.35g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 521.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 521.7 kg of CO2 annually — equivalent to charging 65216 smartphones.
Info::
Green hosting reduces data center emissions
4.35g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 18.4 MB
Your site
4.35g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.11g
Network
0.90g
End-user device
3.34g
At 10,000 monthly views: Monthly: 43.5 kg · Annual: 521.7 kg · ≈ 65216 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
4.35g 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
4.35g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 625% more
vs Target 770% more
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
AGreen HostingGreen (cdn)PASS
Green Hosting
Green (cdn)
Green (cdn)
Info::
Cloudflare CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
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 GoDaddy✗CDN Cloudflare✓
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 206 KB (vs 18810 KB first visit). 676 of 684 resources are served from browser cache, saving 4.30g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 4.35g)
First visit
18810 KB
Repeat visit
206 KB
99% reduction on repeat visits
Saving 4.30g CO2 per returning visitor
676 resources served from cache · 8 resources re-downloaded
A+Transfer Efficiency99% efficientPASS
Transfer Efficiency
99% efficient
99% efficient
Info::
Transfer efficiency: 99%
Only 212 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 212 KB (1% of page weight)
Unused JS 212 KB
0.05g unnecessary CO2 per visit
Actual transfer 18810 KB
Theoretical minimum 18597 KB
Potential savings 212 KB (0.05g CO2)
See Deep Analysis sections above for specific optimizations.
A+Web Font Weight Variants1 font weights loaded across 1 famil(y/ies) -- reasonablePASS
Web Font Weight Variants
1 font weights loaded across 1 famil(y/ies) -- reasonable
1 font weights loaded across 1 famil(y/ies) -- reasonable
Info::
1 font weight(s) loaded across 1 famil(y/ies)
Image Optimization187 images, 362 KB total, 3 KB wastedINFO
Image Optimization
187 images, 362 KB total, 3 KB wasted
Image Optimization Audit
Total Images
187
Total Size
362 KB
Oversized
1
Wasted
3 KB
1 missing alt text 2 missing dimensions 3 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.