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https://avast.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
86
GRADE
B
FIX
0
REVIEW
3
PASS
3
INFO
0
Checks
6
3 PASS 3 REVIEW
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

B
Transfer Efficiency
80% efficient
REVIEW
80% efficient
Info::
Transfer efficiency: 80%
An estimated 197 KB (20%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 197 KB of unused JavaScript. This wasted data produces 0.05g of unnecessary CO2 per page view.
80% efficient

Total waste: 197 KB (20% of page weight)

Unused JS 197 KB

0.05g unnecessary CO2 per visit

Actual transfer 989 KB
Theoretical minimum 791 KB
Potential savings 197 KB (0.05g 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
CO2 Per Page Load
0.23g CO2 per view
PASS
0.23g CO2 per view
Info::
0.23g CO2 per page view
This page transfers 1.0 MB, producing an estimated 0.23g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.05g, end-user device 0.18g.
Got: 0.23g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 27.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 27.4 kg of CO2 annually — equivalent to charging 3430 smartphones.
Info::
Green hosting reduces data center emissions

0.23g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 88% of websites

Sustainable Web Design model v4 · Page size: 1.0 MB

Your site
0.23g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.01g
Network
0.05g
End-user device
0.18g
At 10,000 monthly views: Monthly: 2.3 kg · Annual: 27.4 kg · ≈ 3430 smartphone charges
A+
Repeat Visit Weight
92% cached
PASS
92% cached
Info::
92% reduction on repeat visits
Returning visitors download only 76 KB (vs 989 KB first visit). 89 of 91 resources are served from browser cache, saving 0.21g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.23g)
First visit
989 KB
Repeat visit
76 KB

92% reduction on repeat visits

Saving 0.21g CO2 per returning visitor

89 resources served from cache · 2 resources re-downloaded

A
Carbon Budget
12th percentile
PASS
12th percentile
Info::
0.23g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 88% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 12th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.23g

12th percentile

Cleaner than 88% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 62% cleaner ✓
vs Target 54% cleaner ✓
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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