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https://www.nokia.com

Sustainability

· 7 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
60
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
0
Device:
Mobile Desktop
Checks
7
2 PASS 2 REVIEW 3 FIX
F
CO2 Per Page Load
Action
4.43g CO2 per view
FIX
4.43g CO2 per view
Critical::
4.43g CO2 per page view
This page transfers 15.6 MB, producing an estimated 4.43g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.82g, network 0.77g, end-user device 2.84g.
Got: 4.43g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 531.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 531.3 kg of CO2 annually — equivalent to charging 66417 smartphones.

4.43g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 15.6 MB

Your site
4.43g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.82g
Network
0.77g
End-user device
2.84g
At 10,000 monthly views: Monthly: 44.3 kg · Annual: 531.3 kg · ≈ 66417 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::
Akamai: Committed to 50% renewable by 2030
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 Not identified✗CDN Akamai✗

Akamai: Committed to 50% renewable by 2030

Based on known provider commitments. Verify at thegreenwebfoundation.org

F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
4.43g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

4.43g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 638% more
vs Target 786% more
B
Web Font Weight Variants
No detectable Google Fonts weights
REVIEW
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Repeat Visit Weight
100% cached
PASS
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 49 KB (vs 16010 KB first visit). 98 of 99 resources are served from browser cache, saving 4.41g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 4.43g)
First visit
16010 KB
Repeat visit
49 KB

100% reduction on repeat visits

Saving 4.41g CO2 per returning visitor

98 resources served from cache · 1 resources re-downloaded

A+
Transfer Efficiency
99% efficient
PASS
99% efficient
Info::
Transfer efficiency: 99%
Only 230 KB of potential savings identified. Your page is well-optimized for size.
99% efficient

Total waste: 230 KB (1% of page weight)

Unused JS 230 KB

0.06g unnecessary CO2 per visit

Actual transfer 16010 KB
Theoretical minimum 15779 KB
Potential savings 230 KB (0.06g 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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