https://canva.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
83
GRADE
B
FIX
0
REVIEW
4
PASS
2
INFO
0
Checks
62 PASS 4 REVIEW
BCO2 Per Page Load0.53g CO2 per viewREVIEW
CO2 Per Page Load
0.53g CO2 per view
0.53g CO2 per view
Info::
0.53g CO2 per page view
This page transfers 2.2 MB, producing an estimated 0.53g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.11g, end-user device 0.41g.
Got: 0.53g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 63.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 63.8 kg of CO2 annually — equivalent to charging 7975 smartphones.
Info::
Green hosting reduces data center emissions
0.53g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 57% of websites
Sustainable Web Design model v4 · Page size: 2.2 MB
Your site
0.53g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.11g
End-user device
0.41g
At 10,000 monthly views: Monthly: 5.3 kg · Annual: 63.8 kg · ≈ 7975 smartphone charges
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
AWS uses renewable energy
Info::
AWS: Verified by the Green Web Foundation
Info::
AWS CloudFront: Renewable varies by edge location
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 AWS✓CDN AWS CloudFront✗
AWS: Verified by the Green Web Foundation
AWS CloudFront: Renewable varies by edge location
Based on known provider commitments. Verify at thegreenwebfoundation.org
BCarbon Budget43th percentileREVIEW
Carbon Budget
43th percentile
43th percentile
Info::
0.53g CO2 — below the median website (0.60g)
Better than an estimated 57% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
Info::
Estimated 43th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.53g
43rd percentile
Cleaner than 57% of websites
✗ Above the median website
vs Median 11% cleaner ✓
vs Target 6% more
BTransfer Efficiency85% efficientREVIEW
Transfer Efficiency
85% efficient
85% efficient
Info::
Transfer efficiency: 85%
An estimated 355 KB (15%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 355 KB of unused JavaScript. This wasted data produces 0.08g of unnecessary CO2 per page view.
Total waste: 355 KB (15% of page weight)
Unused JS 355 KB
0.08g unnecessary CO2 per visit
Actual transfer 2300 KB
Theoretical minimum 1944 KB
Potential savings 355 KB (0.08g CO2)
See Deep Analysis sections above for specific optimizations.
A+Repeat Visit Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 50 KB (vs 2300 KB first visit). 65 of 66 resources are served from browser cache, saving 0.52g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.53g)
First visit
2300 KB
Repeat visit
50 KB
98% reduction on repeat visits
Saving 0.52g CO2 per returning visitor
65 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.