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https://osticket.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
66
GRADE
D
FIX
3
REVIEW
2
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 2 REVIEW 3 FIX
D
CO2 Per Page Load
Action
1.06g CO2 per view
FIX
1.06g CO2 per view
Warning::
1.06g CO2 per page view
This page transfers 3.7 MB, producing an estimated 1.06g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.20g, network 0.18g, end-user device 0.68g.
Got: 1.06g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 127.0 kg CO2/year
With 10,000 page views per month, this page would generate approximately 127.0 kg of CO2 annually — equivalent to charging 15873 smartphones.

1.06g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 37% of websites

Sustainable Web Design model v4 · Page size: 3.7 MB

Your site
1.06g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.20g
Network
0.18g
End-user device
0.68g
At 10,000 monthly views: Monthly: 10.6 kg · Annual: 127.0 kg · ≈ 15873 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
63th percentile
FIX
63th percentile
Warning::
1.06g CO2 — above the median website (0.60g)
Heavier than an estimated 37% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 63th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.06g

63rd percentile

Cleaner than 37% of websites

✗ Above the median website

vs Median 76% more
vs Target 112% more
B
Transfer Efficiency
85% efficient
REVIEW
85% efficient
Info::
Transfer efficiency: 85%
An estimated 564 KB (15%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 564 KB of unused JavaScript. This wasted data produces 0.16g of unnecessary CO2 per page view.
85% efficient

Total waste: 564 KB (15% of page weight)

Unused JS 564 KB

0.16g unnecessary CO2 per visit

Actual transfer 3826 KB
Theoretical minimum 3262 KB
Potential savings 564 KB (0.16g 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
97% cached
PASS
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 101 KB (vs 3826 KB first visit). 104 of 107 resources are served from browser cache, saving 1.03g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 1.06g)
First visit
3826 KB
Repeat visit
101 KB

97% reduction on repeat visits

Saving 1.03g CO2 per returning visitor

104 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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