https://dynadot.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
80
GRADE
B
FIX
0
REVIEW
3
PASS
3
INFO
0
Checks
63 PASS 3 REVIEW
BCO2 Per Page Load0.52g CO2 per viewREVIEW
CO2 Per Page Load
0.52g CO2 per view
0.52g CO2 per view
Info::
0.52g CO2 per page view
This page transfers 2.2 MB, producing an estimated 0.52g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.11g, end-user device 0.40g.
Got: 0.52g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 62.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 62.1 kg of CO2 annually — equivalent to charging 7768 smartphones.
Info::
Green hosting reduces data center emissions
0.52g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 59% of websites
Sustainable Web Design model v4 · Page size: 2.2 MB
Your site
0.52g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.11g
End-user device
0.40g
At 10,000 monthly views: Monthly: 5.2 kg · Annual: 62.1 kg · ≈ 7768 smartphone charges
BCarbon Budget41th percentileREVIEW
Carbon Budget
41th percentile
41th percentile
Info::
0.52g CO2 — below the median website (0.60g)
Better than an estimated 59% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
Info::
Estimated 41th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.52g
41st percentile
Cleaner than 59% of websites
✗ Above the median website
vs Median 14% cleaner ✓
vs Target 4% more
CTransfer EfficiencyAction75% efficientREVIEW
Transfer Efficiency
Action75% efficient
75% efficient
Warning::
Transfer efficiency: 75%
An estimated 565 KB (25%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 565 KB of unused JavaScript. This wasted data produces 0.13g of unnecessary CO2 per page view.
Total waste: 565 KB (25% of page weight)
Unused JS 565 KB
0.13g unnecessary CO2 per visit
Actual transfer 2240 KB
Theoretical minimum 1674 KB
Potential savings 565 KB (0.13g 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: Cloudflare, CDN: Cloudflare
Info::
Cloudflare: 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 Cloudflare✓CDN Cloudflare✓
Cloudflare: 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 Weight94% cachedPASS
Repeat Visit Weight
94% cached
94% cached
Info::
94% reduction on repeat visits
Returning visitors download only 145 KB (vs 2240 KB first visit). 129 of 130 resources are served from browser cache, saving 0.48g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 0.52g)
First visit
2240 KB
Repeat visit
145 KB
94% reduction on repeat visits
Saving 0.48g CO2 per returning visitor
129 resources served from cache · 1 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.