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https://evernote.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
76
GRADE
C
FIX
2
REVIEW
1
PASS
3
INFO
0
Device:
Mobile Desktop
Checks
6
3 PASS 1 REVIEW 2 FIX
F
CO2 Per Page Load
Action
1.80g CO2 per view
FIX
1.80g CO2 per view
Warning::
1.80g CO2 per page view
This page transfers 7.6 MB, producing an estimated 1.80g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.05g, network 0.37g, end-user device 1.38g.
Got: 1.80g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 216.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 216.3 kg of CO2 annually — equivalent to charging 27039 smartphones.
Info::
Green hosting reduces data center emissions

1.80g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 16% of websites

Sustainable Web Design model v4 · Page size: 7.6 MB

Your site
1.80g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.05g
Network
0.37g
End-user device
1.38g
At 10,000 monthly views: Monthly: 18.0 kg · Annual: 216.3 kg · ≈ 27039 smartphone charges
F
Carbon Budget
Action
84th percentile
FIX
84th percentile
Warning::
1.80g CO2 — above the median website (0.60g)
Heavier than an estimated 16% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 84th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.80g

84th percentile

Cleaner than 16% of websites

✗ Above the median website

vs Median 200% more
vs Target 261% more
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
Google Cloud uses renewable energy
Info::
Google Cloud: Verified by the Green Web Foundation
Info::
Google Cloud CDN: Inherits Google Cloud regional renewable mix
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 Google Cloud✓CDN Google Cloud CDN✗

Google Cloud: Verified by the Green Web Foundation

Google Cloud CDN: Inherits Google Cloud regional renewable mix

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+
Repeat Visit Weight
96% cached
PASS
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 350 KB (vs 7798 KB first visit). 170 of 172 resources are served from browser cache, saving 1.72g CO2 per repeat visit.
Info::
Repeat visit: 0.08g CO2 (first visit: 1.80g)
First visit
7798 KB
Repeat visit
350 KB

96% reduction on repeat visits

Saving 1.72g CO2 per returning visitor

170 resources served from cache · 2 resources re-downloaded

A+
Transfer Efficiency
92% efficient
PASS
92% efficient
Info::
Transfer efficiency: 92%
Only 593 KB of potential savings identified. Your page is well-optimized for size.
92% efficient

Total waste: 593 KB (8% of page weight)

Unused JS 593 KB

0.14g unnecessary CO2 per visit

Actual transfer 7798 KB
Theoretical minimum 7205 KB
Potential savings 593 KB (0.14g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

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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