https://erome.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
84
GRADE
B
FIX
1
REVIEW
1
PASS
4
INFO
0
Checks
64 PASS 1 REVIEW 1 FIX
DTransfer EfficiencyAction55% efficientFIX
Transfer Efficiency
Action55% efficient
55% efficient
Warning::
Transfer efficiency: 55%
An estimated 165 KB (45%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 165 KB of unused JavaScript. This wasted data produces 0.04g of unnecessary CO2 per page view.
Total waste: 165 KB (45% of page weight)
Unused JS 165 KB
0.04g unnecessary CO2 per visit
Actual transfer 369 KB
Theoretical minimum 204 KB
Potential savings 165 KB (0.04g CO2)
See Deep Analysis sections above for specific optimizations.
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
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
A+CO2 Per Page Load0.09g CO2 per viewPASS
CO2 Per Page Load
0.09g CO2 per view
0.09g CO2 per view
Info::
0.09g CO2 per page view
This page transfers 0.4 MB, producing an estimated 0.09g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.00g, network 0.02g, end-user device 0.07g.
Got: 0.09g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 10.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 10.3 kg of CO2 annually — equivalent to charging 1281 smartphones.
Info::
Green hosting reduces data center emissions
0.09g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 90% of websites
Sustainable Web Design model v4 · Page size: 0.4 MB
Your site
0.09g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.00g
Network
0.02g
End-user device
0.07g
At 10,000 monthly views: Monthly: 0.9 kg · Annual: 10.3 kg · ≈ 1281 smartphone charges
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 5 KB (vs 369 KB first visit). 16 of 17 resources are served from browser cache, saving 0.08g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.09g)
First visit
369 KB
Repeat visit
5 KB
99% reduction on repeat visits
Saving 0.08g CO2 per returning visitor
16 resources served from cache · 1 resources re-downloaded
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.09g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 90% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 10th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.09g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 86% cleaner ✓
vs Target 83% cleaner ✓
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
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.