Skip to content
https://eset.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
3
REVIEW
2
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
6
1 PASS 2 REVIEW 3 FIX
D
CO2 Per Page Load
Action
0.92g CO2 per view
FIX
0.92g CO2 per view
Info::
0.92g CO2 per page view
This page transfers 3.3 MB, producing an estimated 0.92g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.17g, network 0.16g, end-user device 0.59g.
Got: 0.92g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 110.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 110.5 kg of CO2 annually — equivalent to charging 13814 smartphones.

0.92g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 41% of websites

Sustainable Web Design model v4 · Page size: 3.3 MB

Your site
0.92g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.17g
Network
0.16g
End-user device
0.59g
At 10,000 monthly views: Monthly: 9.2 kg · Annual: 110.5 kg · ≈ 13814 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
59th percentile
FIX
59th percentile
Warning::
0.92g CO2 — above the median website (0.60g)
Heavier than an estimated 41% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 59th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.92g

59th percentile

Cleaner than 41% of websites

✗ Above the median website

vs Median 53% more
vs Target 84% more
C
Transfer Efficiency
Action
65% efficient
REVIEW
65% efficient
Warning::
Transfer efficiency: 65%
An estimated 1152 KB (35%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1152 KB of unused JavaScript. This wasted data produces 0.32g of unnecessary CO2 per page view.
65% efficient

Total waste: 1152 KB (35% of page weight)

Unused JS 1152 KB

0.32g unnecessary CO2 per visit

Actual transfer 3330 KB
Theoretical minimum 2177 KB
Potential savings 1152 KB (0.32g 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
95% cached
PASS
95% cached
Info::
95% reduction on repeat visits
Returning visitors download only 154 KB (vs 3330 KB first visit). 119 of 121 resources are served from browser cache, saving 0.88g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 0.92g)
First visit
3330 KB
Repeat visit
154 KB

95% reduction on repeat visits

Saving 0.88g CO2 per returning visitor

119 resources served from cache · 2 resources re-downloaded

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback