https://seattletimes.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
72
GRADE
C
FIX
2
REVIEW
1
PASS
3
INFO
0
Checks
63 PASS 1 REVIEW 2 FIX
DGreen HostingActionNot greenFIX
Green Hosting
ActionNot green
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
Info::
AWS: Renewable energy varies by region; committed to 100% by 2025
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 HostingNot Green Hosted
Hosting AWS✗CDN AWS CloudFront✗
AWS: Renewable energy varies by region; committed to 100% by 2025
AWS CloudFront: Renewable varies by edge location
Based on known provider commitments. Verify at thegreenwebfoundation.org
FTransfer EfficiencyAction0% efficientFIX
Transfer Efficiency
Action0% efficient
0% efficient
Critical::
Transfer efficiency: 0%
An estimated 1385 KB (100%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1385 KB of unused JavaScript. This wasted data produces 0.38g of unnecessary CO2 per page view.
Total waste: 1385 KB (100% of page weight)
Unused JS 1385 KB
0.38g unnecessary CO2 per visit
Actual transfer 527 KB
Theoretical minimum 0 KB
Potential savings 1385 KB (0.38g 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
A+CO2 Per Page Load0.15g CO2 per viewPASS
CO2 Per Page Load
0.15g CO2 per view
0.15g CO2 per view
Info::
0.15g CO2 per page view
This page transfers 0.5 MB, producing an estimated 0.15g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.03g, end-user device 0.09g.
Got: 0.15g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 17.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 17.5 kg of CO2 annually — equivalent to charging 2186 smartphones.
0.15g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 90% of websites
Sustainable Web Design model v4 · Page size: 0.5 MB
Your site
0.15g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.03g
Network
0.03g
End-user device
0.09g
At 10,000 monthly views: Monthly: 1.5 kg · Annual: 17.5 kg · ≈ 2186 smartphone charges
A+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 13 KB (vs 527 KB first visit). 23 of 28 resources are served from browser cache, saving 0.14g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.15g)
First visit
527 KB
Repeat visit
13 KB
97% reduction on repeat visits
Saving 0.14g CO2 per returning visitor
23 resources served from cache · 5 resources re-downloaded
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.15g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 90% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 10th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.15g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 76% cleaner ✓
vs Target 71% cleaner ✓
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.