https://hakobujp.pro
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
66
GRADE
D
FIX
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
FCO2 Per Page LoadAction6.43g CO2 per viewFIX
CO2 Per Page Load
Action6.43g CO2 per view
6.43g CO2 per view
Critical::
6.43g CO2 per page view
This page transfers 27.2 MB, producing an estimated 6.43g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.16g, network 1.33g, end-user device 4.94g.
Got: 6.43g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 772.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 772.2 kg of CO2 annually — equivalent to charging 96523 smartphones.
Info::
Green hosting reduces data center emissions
6.43g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 27.2 MB
Your site
6.43g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.16g
Network
1.33g
End-user device
4.94g
At 10,000 monthly views: Monthly: 64.3 kg · Annual: 772.2 kg · ≈ 96523 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
6.43g 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
6.43g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 972% more
vs Target 1187% more
BWeb Font Weight Variants6 font weights loaded across 1 famil(y/ies)REVIEW
Web Font Weight Variants
6 font weights loaded across 1 famil(y/ies)
6 font weights loaded across 1 famil(y/ies)
Info::
6 font weights loaded -- review whether all are used
5+ weights for a single page is often more than needed. Compare against the actual font-weight CSS rules in your stylesheets; trim weights that aren't applied to any element. Affected families: Poppins.
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 Not identified✗CDN Cloudflare✓
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 40 KB (vs 27839 KB first visit). 117 of 118 resources are served from browser cache, saving 6.43g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 6.43g)
First visit
27839 KB
Repeat visit
40 KB
100% reduction on repeat visits
Saving 6.43g CO2 per returning visitor
117 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency99% efficientPASS
Transfer Efficiency
99% efficient
99% efficient
Info::
Transfer efficiency: 99%
Only 305 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 305 KB (1% of page weight)
Unused JS 305 KB
0.07g unnecessary CO2 per visit
Actual transfer 27839 KB
Theoretical minimum 27534 KB
Potential savings 305 KB (0.07g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization78 images, 3468 KB total, 0 KB wastedINFO
Image Optimization
78 images, 3468 KB total, 0 KB wasted
Image Optimization Audit
Total Images
78
Total Size
3468 KB
5 missing dimensions 13 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.