https://mlb.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
62
GRADE
D
FIX
2
REVIEW
1
PASS
3
INFO
0
Checks
63 PASS 1 REVIEW 2 FIX
FCO2 Per Page LoadAction16.18g CO2 per viewFIX
CO2 Per Page Load
Action16.18g CO2 per view
16.18g CO2 per view
Critical::
16.18g CO2 per page view
This page transfers 68.4 MB, producing an estimated 16.18g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.41g, network 3.35g, end-user device 12.43g.
Got: 16.18g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 1941.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 1941.3 kg of CO2 annually — equivalent to charging 242667 smartphones.
Info::
Green hosting reduces data center emissions
16.18g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 68.4 MB
Your site
16.18g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.41g
Network
3.35g
End-user device
12.43g
At 10,000 monthly views: Monthly: 161.8 kg · Annual: 1941.3 kg · ≈ 242667 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
16.18g 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
16.18g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 2596% more
vs Target 3136% more
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
Google Cloud uses renewable energy
Info::
Google Cloud: Verified by the Green Web Foundation
Info::
Google Cloud CDN: Inherits Google Cloud regional renewable mix
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 Google Cloud✓CDN Google Cloud CDN✗
Google Cloud: Verified by the Green Web Foundation
Google Cloud CDN: Inherits Google Cloud regional renewable mix
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 552 KB (vs 69991 KB first visit). 787 of 808 resources are served from browser cache, saving 16.05g CO2 per repeat visit.
Info::
Repeat visit: 0.13g CO2 (first visit: 16.18g)
First visit
69991 KB
Repeat visit
552 KB
99% reduction on repeat visits
Saving 16.05g CO2 per returning visitor
787 resources served from cache · 21 resources re-downloaded
A+Transfer Efficiency95% efficientPASS
Transfer Efficiency
95% efficient
95% efficient
Info::
Transfer efficiency: 95%
Only 3419 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 3419 KB (5% of page weight)
Unused JS 3419 KB
0.79g unnecessary CO2 per visit
Actual transfer 69991 KB
Theoretical minimum 66571 KB
Potential savings 3419 KB (0.79g 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: Google Cloud
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.