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https://nordstrom.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
59
GRADE
D
FIX
2
REVIEW
2
PASS
2
INFO
0
Device:
Mobile Desktop
Checks
6
2 PASS 2 REVIEW 2 FIX
F
CO2 Per Page Load
Action
3.61g CO2 per view
FIX
3.61g CO2 per view
Critical::
3.61g CO2 per page view
This page transfers 15.3 MB, producing an estimated 3.61g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.09g, network 0.75g, end-user device 2.78g.
Got: 3.61g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 433.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 433.8 kg of CO2 annually — equivalent to charging 54219 smartphones.
Info::
Green hosting reduces data center emissions

3.61g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 15.3 MB

Your site
3.61g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.09g
Network
0.75g
End-user device
2.78g
At 10,000 monthly views: Monthly: 36.1 kg · Annual: 433.8 kg · ≈ 54219 smartphone charges
F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
3.61g 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

3.61g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 502% more
vs Target 623% more
B
Transfer Efficiency
89% efficient
REVIEW
89% efficient
Info::
Transfer efficiency: 89%
An estimated 1703 KB (11%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1703 KB of unused JavaScript. This wasted data produces 0.39g of unnecessary CO2 per page view.
89% efficient

Total waste: 1703 KB (11% of page weight)

Unused JS 1703 KB

0.39g unnecessary CO2 per visit

Actual transfer 15638 KB
Theoretical minimum 13934 KB
Potential savings 1703 KB (0.39g 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
Green Hosting
Green (cdn)
PASS
Green (cdn)
Info::
Fastly CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
Info::
Fastly: 100% renewable energy for edge network
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 Hosting✓ Green Hosted
Hosting Not identified✗CDN Fastly✓

Fastly: 100% renewable energy for edge network

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+
Repeat Visit Weight
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 137 KB (vs 15638 KB first visit). 489 of 492 resources are served from browser cache, saving 3.58g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 3.61g)
First visit
15638 KB
Repeat visit
137 KB

99% reduction on repeat visits

Saving 3.58g CO2 per returning visitor

489 resources served from cache · 3 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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