https://bolbala.in
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
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
DCO2 Per Page LoadAction0.94g CO2 per viewFIX
CO2 Per Page Load
Action0.94g CO2 per view
0.94g CO2 per view
Info::
0.94g CO2 per page view
This page transfers 3.3 MB, producing an estimated 0.94g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.17g, network 0.16g, end-user device 0.60g.
Got: 0.94g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 112.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 112.3 kg of CO2 annually — equivalent to charging 14033 smartphones.
0.94g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 41% of websites
Sustainable Web Design model v4 · Page size: 3.3 MB
Your site
0.94g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.17g
Network
0.16g
End-user device
0.60g
At 10,000 monthly views: Monthly: 9.4 kg · Annual: 112.3 kg · ≈ 14033 smartphone charges
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
Unknown
Info::
Hosting provider could not be identified
Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments.
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 HostingUnable to Determine
Hosting Not identified✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction59th percentileFIX
Carbon Budget
Action59th percentile
59th percentile
Warning::
0.94g CO2 — above the median website (0.60g)
Heavier than an estimated 41% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 59th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.94g
59th percentile
Cleaner than 41% of websites
✗ Above the median website
vs Median 56% more
vs Target 87% more
CWeb Font Weight VariantsAction55 font weights loaded across 4 famil(y/ies)REVIEW
Web Font Weight Variants
Action55 font weights loaded across 4 famil(y/ies)
55 font weights loaded across 4 famil(y/ies)
Warning::
55 font weights loaded -- likely 100+ KB of unused payload
Loading 55 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: Bebas Neue, Lora, Roboto, Roboto Slab.
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
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 30 KB (vs 3382 KB first visit). 91 of 92 resources are served from browser cache, saving 0.93g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.94g)
First visit
3382 KB
Repeat visit
30 KB
99% reduction on repeat visits
Saving 0.93g CO2 per returning visitor
91 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency98% efficientPASS
Transfer Efficiency
98% efficient
98% efficient
Info::
Transfer efficiency: 98%
Only 58 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 58 KB (2% of page weight)
Unused JS 58 KB
0.02g unnecessary CO2 per visit
Actual transfer 3382 KB
Theoretical minimum 3324 KB
Potential savings 58 KB (0.02g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization86 images, 1449 KB total, 243 KB wastedINFO
Image Optimization
86 images, 1449 KB total, 243 KB wasted
Image Optimization Audit
Total Images
86
Total Size
1449 KB
Oversized
7
Wasted
243 KB
3 missing dimensions 7 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.