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https://ihg.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
55
GRADE
D
FIX
3
REVIEW
2
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 2 REVIEW 3 FIX
F
CO2 Per Page Load
Action
1.90g CO2 per view
FIX
1.90g CO2 per view
Warning::
1.90g CO2 per page view
This page transfers 6.7 MB, producing an estimated 1.90g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.35g, network 0.33g, end-user device 1.22g.
Got: 1.90g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 227.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 227.8 kg of CO2 annually — equivalent to charging 28478 smartphones.

1.90g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 13% of websites

Sustainable Web Design model v4 · Page size: 6.7 MB

Your site
1.90g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.35g
Network
0.33g
End-user device
1.22g
At 10,000 monthly views: Monthly: 19.0 kg · Annual: 227.8 kg · ≈ 28478 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

F
Carbon Budget
Action
87th percentile
FIX
87th percentile
Warning::
1.90g CO2 — above the median website (0.60g)
Heavier than an estimated 13% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 87th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.90g

87th percentile

Cleaner than 13% of websites

✗ Above the median website

vs Median 216% more
vs Target 280% more
B
Transfer Efficiency
84% efficient
REVIEW
84% efficient
Info::
Transfer efficiency: 84%
An estimated 1089 KB (16%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1089 KB of unused JavaScript. This wasted data produces 0.30g of unnecessary CO2 per page view.
84% efficient

Total waste: 1089 KB (16% of page weight)

Unused JS 1089 KB

0.30g unnecessary CO2 per visit

Actual transfer 6864 KB
Theoretical minimum 5775 KB
Potential savings 1089 KB (0.30g 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
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 72 KB (vs 6864 KB first visit). 182 of 185 resources are served from browser cache, saving 1.88g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 1.90g)
First visit
6864 KB
Repeat visit
72 KB

99% reduction on repeat visits

Saving 1.88g CO2 per returning visitor

182 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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