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https://torontosun.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
60
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
1.79g CO2 per view
FIX
1.79g CO2 per view
Warning::
1.79g CO2 per page view
This page transfers 7.6 MB, producing an estimated 1.79g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.37g, end-user device 1.38g.
Got: 1.79g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 215.0 kg CO2/year
With 10,000 page views per month, this page would generate approximately 215.0 kg of CO2 annually — equivalent to charging 26869 smartphones.
Info::
Green hosting reduces data center emissions

1.79g

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
1.79g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.04g
Network
0.37g
End-user device
1.38g
At 10,000 monthly views: Monthly: 17.9 kg · Annual: 215.0 kg · ≈ 26869 smartphone charges
F
Carbon Budget
Action
84th percentile
FIX
84th percentile
Warning::
1.79g 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

1.79g

84th percentile

Cleaner than 16% of websites

✗ Above the median website

vs Median 199% more
vs Target 258% 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

C
Transfer Efficiency
Action
70% efficient
REVIEW
70% efficient
Warning::
Transfer efficiency: 70%
An estimated 2339 KB (30%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 2339 KB of unused JavaScript. This wasted data produces 0.54g of unnecessary CO2 per page view.
70% efficient

Total waste: 2339 KB (30% of page weight)

Unused JS 2339 KB

0.54g unnecessary CO2 per visit

Actual transfer 7749 KB
Theoretical minimum 5410 KB
Potential savings 2339 KB (0.54g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Repeat Visit Weight
95% cached
PASS
95% cached
Info::
95% reduction on repeat visits
Returning visitors download only 377 KB (vs 7749 KB first visit). 372 of 383 resources are served from browser cache, saving 1.70g CO2 per repeat visit.
Info::
Repeat visit: 0.09g CO2 (first visit: 1.79g)
First visit
7749 KB
Repeat visit
377 KB

95% reduction on repeat visits

Saving 1.70g CO2 per returning visitor

372 resources served from cache · 11 resources re-downloaded

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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