https://carteaservice.ro
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
73
GRADE
C
FIX
2
REVIEW
4
PASS
1
INFO
1
Checks
81 PASS 4 REVIEW 2 FIX
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
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
DCarbon BudgetAction54th percentileFIX
Carbon Budget
Action54th percentile
54th percentile
Warning::
0.75g CO2 — above the median website (0.60g)
Heavier than an estimated 46% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 54th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.75g
54th percentile
Cleaner than 46% of websites
✗ Above the median website
vs Median 24% more
vs Target 49% more
BCO2 Per Page Load0.75g CO2 per viewREVIEW
CO2 Per Page Load
0.75g CO2 per view
0.75g CO2 per view
Info::
0.75g CO2 per page view
This page transfers 2.6 MB, producing an estimated 0.75g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.14g, network 0.13g, end-user device 0.48g.
Got: 0.75g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 89.6 kg CO2/year
With 10,000 page views per month, this page would generate approximately 89.6 kg of CO2 annually — equivalent to charging 11199 smartphones.
0.75g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 46% of websites
Sustainable Web Design model v4 · Page size: 2.6 MB
Your site
0.75g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.14g
Network
0.13g
End-user device
0.48g
At 10,000 monthly views: Monthly: 7.5 kg · Annual: 89.6 kg · ≈ 11199 smartphone charges
BTransfer Efficiency83% efficientREVIEW
Transfer Efficiency
83% efficient
83% efficient
Info::
Transfer efficiency: 83%
An estimated 455 KB (17%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 455 KB of unused JavaScript. This wasted data produces 0.13g of unnecessary CO2 per page view.
Total waste: 455 KB (17% of page weight)
Unused JS 455 KB
0.13g unnecessary CO2 per visit
Actual transfer 2699 KB
Theoretical minimum 2244 KB
Potential savings 455 KB (0.13g CO2)
See Deep Analysis sections above for specific optimizations.
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Repeat Visit Weight94% cachedPASS
Repeat Visit Weight
94% cached
94% cached
Info::
94% reduction on repeat visits
Returning visitors download only 174 KB (vs 2699 KB first visit). 216 of 221 resources are served from browser cache, saving 0.70g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 0.75g)
First visit
2699 KB
Repeat visit
174 KB
94% reduction on repeat visits
Saving 0.70g CO2 per returning visitor
216 resources served from cache · 5 resources re-downloaded
Image Optimization100 images, 25 KB total, 11 KB wastedINFO
Image Optimization
100 images, 25 KB total, 11 KB wasted
Image Optimization Audit
Total Images
100
Total Size
25 KB
Oversized
1
Wasted
11 KB
2 missing dimensions 7 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.