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https://nrk.no

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
2
PASS
3
INFO
0
Device:
Mobile Desktop
Checks
6
3 PASS 2 REVIEW 1 FIX
D
Green Hosting
Action
Unknown
FIX
Unknown
Info::
Hosting provider could not be identified
Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their 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 HostingUnable to Determine
Hosting Not identified✗CDN Not identified✗

Based on known provider commitments. Verify at thegreenwebfoundation.org

B
Carbon Budget
36th percentile
REVIEW
36th percentile
Info::
0.47g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 64% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 36th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.47g

36th percentile

Cleaner than 64% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 22% cleaner ✓
vs Target 6% cleaner ✓
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
CO2 Per Page Load
0.47g CO2 per view
PASS
0.47g CO2 per view
Info::
0.47g CO2 per page view
This page transfers 1.7 MB, producing an estimated 0.47g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.09g, network 0.08g, end-user device 0.30g.
Got: 0.47g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 56.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 56.3 kg of CO2 annually — equivalent to charging 7041 smartphones.

0.47g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 64% of websites

Sustainable Web Design model v4 · Page size: 1.7 MB

Your site
0.47g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.09g
Network
0.08g
End-user device
0.30g
At 10,000 monthly views: Monthly: 4.7 kg · Annual: 56.3 kg · ≈ 7041 smartphone charges
A+
Repeat Visit Weight
96% cached
PASS
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 72 KB (vs 1697 KB first visit). 161 of 164 resources are served from browser cache, saving 0.45g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.47g)
First visit
1697 KB
Repeat visit
72 KB

96% reduction on repeat visits

Saving 0.45g CO2 per returning visitor

161 resources served from cache · 3 resources re-downloaded

A+
Transfer Efficiency
94% efficient
PASS
94% efficient
Info::
Transfer efficiency: 94%
Only 109 KB of potential savings identified. Your page is well-optimized for size.
94% efficient

Total waste: 109 KB (6% of page weight)

Unused JS 109 KB

0.03g unnecessary CO2 per visit

Actual transfer 1697 KB
Theoretical minimum 1587 KB
Potential savings 109 KB (0.03g CO2)

See Deep Analysis sections above for specific optimizations.

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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