https://ibkul.com
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
1
PASS
4
INFO
1
Checks
84 PASS 1 REVIEW 2 FIX
FCO2 Per Page LoadAction8.72g CO2 per viewFIX
CO2 Per Page Load
Action8.72g CO2 per view
8.72g CO2 per view
Critical::
8.72g CO2 per page view
This page transfers 36.8 MB, producing an estimated 8.72g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.22g, network 1.80g, end-user device 6.70g.
Got: 8.72g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 1046.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 1046.1 kg of CO2 annually — equivalent to charging 130766 smartphones.
Info::
Green hosting reduces data center emissions
8.72g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 36.8 MB
Your site
8.72g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.22g
Network
1.80g
End-user device
6.70g
At 10,000 monthly views: Monthly: 87.2 kg · Annual: 1046.1 kg · ≈ 130766 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
8.72g 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
8.72g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 1353% more
vs Target 1644% more
CWeb Font Weight VariantsAction27 font weights loaded across 3 famil(y/ies)REVIEW
Web Font Weight Variants
Action27 font weights loaded across 3 famil(y/ies)
27 font weights loaded across 3 famil(y/ies)
Warning::
27 font weights loaded -- likely 100+ KB of unused payload
Loading 27 font weights typically transfers 200-400 KB just for fonts. Most pages legitimately use 2-3 weights (regular + bold, maybe medium). Audit which weights your stylesheet actually applies and trim the Google Fonts URL accordingly. Affected families: DM Sans, Inter, Lato.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Amazon Web Services, CDN: Cloudflare
Info::
Amazon Web Services: 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 Amazon Web Services✓CDN Cloudflare✓
Amazon Web Services: 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 Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 223 KB (vs 37716 KB first visit). 726 of 729 resources are served from browser cache, saving 8.67g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 8.72g)
First visit
37716 KB
Repeat visit
223 KB
99% reduction on repeat visits
Saving 8.67g CO2 per returning visitor
726 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency97% efficientPASS
Transfer Efficiency
97% efficient
97% efficient
Info::
Transfer efficiency: 97%
Only 1040 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 1040 KB (3% of page weight)
Unused JS 1040 KB
0.24g unnecessary CO2 per visit
Actual transfer 37716 KB
Theoretical minimum 36675 KB
Potential savings 1040 KB (0.24g 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 Optimization169 images, 1883 KB total, 1169 KB wastedINFO
Image Optimization
169 images, 1883 KB total, 1169 KB wasted
Image Optimization Audit
Total Images
169
Total Size
1883 KB
Oversized
14
Wasted
1169 KB
2 missing dimensions 11 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.