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https://koreatimes.co.kr

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
56
GRADE
D
FIX
3
REVIEW
2
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 2 REVIEW 3 FIX
F
CO2 Per Page Load
Action
1.78g CO2 per view
FIX
1.78g CO2 per view
Warning::
1.78g CO2 per page view
This page transfers 6.3 MB, producing an estimated 1.78g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.33g, network 0.31g, end-user device 1.14g.
Got: 1.78g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 213.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 213.2 kg of CO2 annually — equivalent to charging 26655 smartphones.

1.78g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 17% of websites

Sustainable Web Design model v4 · Page size: 6.3 MB

Your site
1.78g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.33g
Network
0.31g
End-user device
1.14g
At 10,000 monthly views: Monthly: 17.8 kg · Annual: 213.2 kg · ≈ 26655 smartphone charges
D
Green Hosting
Action
Not green
FIX
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::
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 Amazon Web Services✗CDN Not identified✗

Based on known provider commitments. Verify at thegreenwebfoundation.org

F
Carbon Budget
Action
83th percentile
FIX
83th percentile
Warning::
1.78g CO2 — above the median website (0.60g)
Heavier than an estimated 17% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 83th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.78g

83rd percentile

Cleaner than 17% of websites

✗ Above the median website

vs Median 196% more
vs Target 255% more
B
Transfer Efficiency
82% efficient
REVIEW
82% efficient
Info::
Transfer efficiency: 82%
An estimated 1144 KB (18%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1144 KB of unused JavaScript. This wasted data produces 0.32g of unnecessary CO2 per page view.
82% efficient

Total waste: 1144 KB (18% of page weight)

Unused JS 1144 KB

0.32g unnecessary CO2 per visit

Actual transfer 6425 KB
Theoretical minimum 5280 KB
Potential savings 1144 KB (0.32g CO2)

See Deep Analysis sections above for specific optimizations.

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Repeat Visit Weight
98% cached
PASS
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 116 KB (vs 6425 KB first visit). 203 of 205 resources are served from browser cache, saving 1.74g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 1.78g)
First visit
6425 KB
Repeat visit
116 KB

98% reduction on repeat visits

Saving 1.74g CO2 per returning visitor

203 resources served from cache · 2 resources re-downloaded

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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