Skip to content
https://shein.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
54
GRADE
F
FIX
4
REVIEW
1
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 1 REVIEW 4 FIX
D
CO2 Per Page Load
Action
1.12g CO2 per view
FIX
1.12g CO2 per view
Warning::
1.12g CO2 per page view
This page transfers 3.9 MB, producing an estimated 1.12g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.21g, network 0.19g, end-user device 0.72g.
Got: 1.12g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 134.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 134.2 kg of CO2 annually — equivalent to charging 16769 smartphones.

1.12g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 36% of websites

Sustainable Web Design model v4 · Page size: 3.9 MB

Your site
1.12g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.21g
Network
0.19g
End-user device
0.72g
At 10,000 monthly views: Monthly: 11.2 kg · Annual: 134.2 kg · ≈ 16769 smartphone charges
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

D
Carbon Budget
Action
64th percentile
FIX
64th percentile
Warning::
1.12g CO2 — above the median website (0.60g)
Heavier than an estimated 36% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 64th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.12g

64th percentile

Cleaner than 36% of websites

✗ Above the median website

vs Median 86% more
vs Target 124% more
F
Transfer Efficiency
Action
0% efficient
FIX
0% efficient
Critical::
Transfer efficiency: 0%
An estimated 4985 KB (100%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 4985 KB of unused JavaScript. This wasted data produces 1.38g of unnecessary CO2 per page view.
0% efficient

Total waste: 4985 KB (100% of page weight)

Unused JS 4985 KB

1.38g unnecessary CO2 per visit

Actual transfer 4042 KB
Theoretical minimum 0 KB
Potential savings 4985 KB (1.38g 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
95% cached
PASS
95% cached
Info::
95% reduction on repeat visits
Returning visitors download only 200 KB (vs 4042 KB first visit). 476 of 477 resources are served from browser cache, saving 1.06g CO2 per repeat visit.
Info::
Repeat visit: 0.06g CO2 (first visit: 1.12g)
First visit
4042 KB
Repeat visit
200 KB

95% reduction on repeat visits

Saving 1.06g CO2 per returning visitor

476 resources served from cache · 1 resources re-downloaded

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

Send Feedback