https://adjust.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
86
GRADE
B
FIX
0
REVIEW
2
PASS
4
INFO
0
Checks
64 PASS 2 REVIEW
CTransfer EfficiencyAction73% efficientREVIEW
Transfer Efficiency
Action73% efficient
73% efficient
Warning::
Transfer efficiency: 73%
An estimated 457 KB (27%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 457 KB of unused JavaScript. This wasted data produces 0.11g of unnecessary CO2 per page view.
Total waste: 457 KB (27% of page weight)
Unused JS 457 KB
0.11g unnecessary CO2 per visit
Actual transfer 1721 KB
Theoretical minimum 1263 KB
Potential savings 457 KB (0.11g CO2)
See Deep Analysis sections above for specific optimizations.
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
ACO2 Per Page Load0.40g CO2 per viewPASS
CO2 Per Page Load
0.40g CO2 per view
0.40g CO2 per view
Info::
0.40g CO2 per page view
This page transfers 1.7 MB, producing an estimated 0.40g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.08g, end-user device 0.31g.
Got: 0.40g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 47.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 47.7 kg of CO2 annually — equivalent to charging 5966 smartphones.
Info::
Green hosting reduces data center emissions
0.40g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 71% of websites
Sustainable Web Design model v4 · Page size: 1.7 MB
Your site
0.40g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.08g
End-user device
0.31g
At 10,000 monthly views: Monthly: 4.0 kg · Annual: 47.7 kg · ≈ 5966 smartphone charges
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Vercel, CDN: Vercel
Info::
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
Info::
Vercel: Hosted on AWS/Google Cloud with 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 Hosting✓ Green Hosted
Hosting Vercel✓CDN Vercel✓
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
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 29 KB (vs 1721 KB first visit). 121 of 123 resources are served from browser cache, saving 0.39g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.40g)
First visit
1721 KB
Repeat visit
29 KB
98% reduction on repeat visits
Saving 0.39g CO2 per returning visitor
121 resources served from cache · 2 resources re-downloaded
ACarbon Budget29th percentilePASS
Carbon Budget
29th percentile
29th percentile
Info::
0.40g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 71% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 29th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.40g
29th percentile
Cleaner than 71% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 34% cleaner ✓
vs Target 20% cleaner ✓
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.