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Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
76
GRADE
C
FIX
0
REVIEW
4
PASS
2
INFO
0
Device:
Mobile Desktop
Checks
6
2 PASS 4 REVIEW
B
CO2 Per Page Load
0.58g CO2 per view
REVIEW
0.58g CO2 per view
Info::
0.58g CO2 per page view
This page transfers 2.4 MB, producing an estimated 0.58g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.12g, end-user device 0.44g.
Got: 0.58g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 69.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 69.1 kg of CO2 annually — equivalent to charging 8633 smartphones.
Info::
Green hosting reduces data center emissions

0.58g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 53% of websites

Sustainable Web Design model v4 · Page size: 2.4 MB

Your site
0.58g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.01g
Network
0.12g
End-user device
0.44g
At 10,000 monthly views: Monthly: 5.8 kg · Annual: 69.1 kg · ≈ 8633 smartphone charges
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
OVHcloud uses renewable energy
Info::
OVHcloud: Verified by the Green Web Foundation
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 OVHcloud✓CDN Not identified✗

OVHcloud: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

B
Carbon Budget
47th percentile
REVIEW
47th percentile
Info::
0.58g CO2 — below the median website (0.60g)
Better than an estimated 53% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
Info::
Estimated 47th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.58g

47th percentile

Cleaner than 53% of websites

✗ Above the median website

vs Median 4% cleaner ✓
vs Target 15% more
C
Transfer Efficiency
Action
71% efficient
REVIEW
71% efficient
Warning::
Transfer efficiency: 71%
An estimated 717 KB (29%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 717 KB of unused JavaScript. This wasted data produces 0.17g of unnecessary CO2 per page view.
71% efficient

Total waste: 717 KB (29% of page weight)

Unused JS 717 KB

0.17g unnecessary CO2 per visit

Actual transfer 2490 KB
Theoretical minimum 1772 KB
Potential savings 717 KB (0.17g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Repeat Visit Weight
97% cached
PASS
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 78 KB (vs 2490 KB first visit). 327 of 358 resources are served from browser cache, saving 0.56g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.58g)
First visit
2490 KB
Repeat visit
78 KB

97% reduction on repeat visits

Saving 0.56g CO2 per returning visitor

327 resources served from cache · 31 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: OVHcloud

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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