https://banco.bradesco
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
65
GRADE
D
FIX
3
REVIEW
3
PASS
1
INFO
1
Checks
81 PASS 3 REVIEW 3 FIX
DCO2 Per Page LoadAction1.00g CO2 per viewFIX
CO2 Per Page Load
Action1.00g CO2 per view
1.00g CO2 per view
Warning::
1.00g CO2 per page view
This page transfers 3.5 MB, producing an estimated 1.00g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.19g, network 0.17g, end-user device 0.64g.
Got: 1.00g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 120.0 kg CO2/year
With 10,000 page views per month, this page would generate approximately 120.0 kg of CO2 annually — equivalent to charging 15004 smartphones.
1.00g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 39% of websites
Sustainable Web Design model v4 · Page size: 3.5 MB
Your site
1.00g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.19g
Network
0.17g
End-user device
0.64g
At 10,000 monthly views: Monthly: 10.0 kg · Annual: 120.0 kg · ≈ 15004 smartphone charges
DGreen HostingActionNot greenFIX
Green Hosting
ActionNot green
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
Info::
Akamai: Committed to 50% renewable by 2030
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 HostingNot Green Hosted
Hosting Not identified✗CDN Akamai✗
Akamai: Committed to 50% renewable by 2030
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction61th percentileFIX
Carbon Budget
Action61th percentile
61th percentile
Warning::
1.00g CO2 — above the median website (0.60g)
Heavier than an estimated 39% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 61th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.00g
61st percentile
Cleaner than 39% of websites
✗ Above the median website
vs Median 67% more
vs Target 100% more
BTransfer Efficiency77% efficientREVIEW
Transfer Efficiency
77% efficient
77% efficient
Info::
Transfer efficiency: 77%
An estimated 838 KB (23%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 838 KB of unused JavaScript. This wasted data produces 0.23g of unnecessary CO2 per page view.
Total waste: 838 KB (23% of page weight)
Unused JS 838 KB
0.23g unnecessary CO2 per visit
Actual transfer 3616 KB
Theoretical minimum 2778 KB
Potential savings 838 KB (0.23g CO2)
See Deep Analysis sections above for specific optimizations.
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.
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 28 KB (vs 3616 KB first visit). 183 of 186 resources are served from browser cache, saving 0.99g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 1.00g)
First visit
3616 KB
Repeat visit
28 KB
99% reduction on repeat visits
Saving 0.99g CO2 per returning visitor
183 resources served from cache · 3 resources re-downloaded
Image Optimization74 images, 14 KB total, 0 KB wastedINFO
Image Optimization
74 images, 14 KB total, 0 KB wasted
Image Optimization Audit
Total Images
74
Total Size
14 KB
2 missing alt text 38 missing dimensions 23 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.