https://suno.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
68
GRADE
D
FIX
2
REVIEW
1
PASS
3
INFO
0
Checks
63 PASS 1 REVIEW 2 FIX
DCO2 Per Page LoadAction1.41g CO2 per viewFIX
CO2 Per Page Load
Action1.41g CO2 per view
1.41g CO2 per view
Warning::
1.41g CO2 per page view
This page transfers 5.9 MB, producing an estimated 1.41g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.29g, end-user device 1.08g.
Got: 1.41g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 168.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 168.8 kg of CO2 annually — equivalent to charging 21097 smartphones.
Info::
Green hosting reduces data center emissions
1.41g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 27% of websites
Sustainable Web Design model v4 · Page size: 5.9 MB
Your site
1.41g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.04g
Network
0.29g
End-user device
1.08g
At 10,000 monthly views: Monthly: 14.1 kg · Annual: 168.8 kg · ≈ 21097 smartphone charges
FCarbon BudgetAction73th percentileFIX
Carbon Budget
Action73th percentile
73th percentile
Warning::
1.41g CO2 — above the median website (0.60g)
Heavier than an estimated 27% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 73th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.41g
73rd percentile
Cleaner than 27% of websites
✗ Above the median website
vs Median 134% more
vs Target 181% more
CTransfer EfficiencyAction67% efficientREVIEW
Transfer Efficiency
Action67% efficient
67% efficient
Warning::
Transfer efficiency: 67%
An estimated 2029 KB (33%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 2029 KB of unused JavaScript. This wasted data produces 0.47g of unnecessary CO2 per page view.
Total waste: 2029 KB (33% of page weight)
Unused JS 2029 KB
0.47g unnecessary CO2 per visit
Actual transfer 6085 KB
Theoretical minimum 4055 KB
Potential savings 2029 KB (0.47g CO2)
See Deep Analysis sections above for specific optimizations.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Next.js, CDN: Cloudflare
Info::
Next.js: 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 Next.js✓CDN Cloudflare✓
Next.js: 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 Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 125 KB (vs 6085 KB first visit). 252 of 256 resources are served from browser cache, saving 1.38g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 1.41g)
First visit
6085 KB
Repeat visit
125 KB
98% reduction on repeat visits
Saving 1.38g CO2 per returning visitor
252 resources served from cache · 4 resources re-downloaded
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
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.