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
Checks
63 PASS 2 REVIEW 1 FIX
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
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
BCarbon Budget34th percentileREVIEW
Carbon Budget
34th percentile
34th percentile
Info::
0.45g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 66% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 34th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.45g
34th percentile
Cleaner than 66% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 25% cleaner ✓
vs Target 10% cleaner ✓
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
ACO2 Per Page Load0.45g CO2 per viewPASS
CO2 Per Page Load
0.45g CO2 per view
0.45g CO2 per view
Info::
0.45g CO2 per page view
This page transfers 1.6 MB, producing an estimated 0.45g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.08g, network 0.08g, end-user device 0.29g.
Got: 0.45g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 53.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 53.8 kg of CO2 annually — equivalent to charging 6726 smartphones.
0.45g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 66% of websites
Sustainable Web Design model v4 · Page size: 1.6 MB
Your site
0.45g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.08g
Network
0.08g
End-user device
0.29g
At 10,000 monthly views: Monthly: 4.5 kg · Annual: 53.8 kg · ≈ 6726 smartphone charges
A+Repeat Visit Weight96% cachedPASS
Repeat Visit Weight
96% cached
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 71 KB (vs 1621 KB first visit). 153 of 156 resources are served from browser cache, saving 0.43g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.45g)
First visit
1621 KB
Repeat visit
71 KB
96% reduction on repeat visits
Saving 0.43g CO2 per returning visitor
153 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency93% efficientPASS
Transfer Efficiency
93% efficient
93% efficient
Info::
Transfer efficiency: 93%
Only 114 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 114 KB (7% of page weight)
Unused JS 114 KB
0.03g unnecessary CO2 per visit
Actual transfer 1621 KB
Theoretical minimum 1506 KB
Potential savings 114 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.