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https://unity3d.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
62
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
5.66g CO2 per view
FIX
5.66g CO2 per view
Critical::
5.66g CO2 per page view
This page transfers 23.9 MB, producing an estimated 5.66g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.14g, network 1.17g, end-user device 4.35g.
Got: 5.66g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 679.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 679.5 kg of CO2 annually — equivalent to charging 84931 smartphones.
Info::
Green hosting reduces data center emissions

5.66g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 23.9 MB

Your site
5.66g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.14g
Network
1.17g
End-user device
4.35g
At 10,000 monthly views: Monthly: 56.6 kg · Annual: 679.5 kg · ≈ 84931 smartphone charges
F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
5.66g 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

5.66g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 844% more
vs Target 1032% more
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
Google Cloud uses renewable energy
Info::
Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017
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 Not identified✗

Google Cloud: Carbon-neutral since 2007, 100% renewable energy matched since 2017

Based on known provider commitments. Verify at thegreenwebfoundation.org

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Repeat Visit Weight
100% cached
PASS
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 95 KB (vs 24496 KB first visit). 189 of 190 resources are served from browser cache, saving 5.64g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 5.66g)
First visit
24496 KB
Repeat visit
95 KB

100% reduction on repeat visits

Saving 5.64g CO2 per returning visitor

189 resources served from cache · 1 resources re-downloaded

A+
Transfer Efficiency
99% efficient
PASS
99% efficient
Info::
Transfer efficiency: 99%
Only 341 KB of potential savings identified. Your page is well-optimized for size.
99% efficient

Total waste: 341 KB (1% of page weight)

Unused JS 341 KB

0.08g unnecessary CO2 per visit

Actual transfer 24496 KB
Theoretical minimum 24154 KB
Potential savings 341 KB (0.08g CO2)

See Deep Analysis sections above for specific optimizations.

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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