https://onlinenews.ie
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
60
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
FCO2 Per Page LoadAction3.48g CO2 per viewFIX
CO2 Per Page Load
Action3.48g CO2 per view
3.48g CO2 per view
Critical::
3.48g CO2 per page view
This page transfers 12.3 MB, producing an estimated 3.48g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.65g, network 0.60g, end-user device 2.24g.
Got: 3.48g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 418.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 418.1 kg of CO2 annually — equivalent to charging 52267 smartphones.
3.48g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 12.3 MB
Your site
3.48g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.65g
Network
0.60g
End-user device
2.24g
At 10,000 monthly views: Monthly: 34.8 kg · Annual: 418.1 kg · ≈ 52267 smartphone charges
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
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
3.48g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
3.48g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 481% more
vs Target 597% more
BWeb Font Weight Variants6 font weights loaded across 1 famil(y/ies)REVIEW
Web Font Weight Variants
6 font weights loaded across 1 famil(y/ies)
6 font weights loaded across 1 famil(y/ies)
Info::
6 font weights loaded -- review whether all are used
5+ weights for a single page is often more than needed. Compare against the actual font-weight CSS rules in your stylesheets; trim weights that aren't applied to any element. Affected families: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif.
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 Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 141 KB (vs 12599 KB first visit). 122 of 125 resources are served from browser cache, saving 3.45g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 3.48g)
First visit
12599 KB
Repeat visit
141 KB
99% reduction on repeat visits
Saving 3.45g CO2 per returning visitor
122 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency100% efficientPASS
Transfer Efficiency
100% efficient
100% efficient
Info::
Transfer efficiency: 100%
Only 23 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 23 KB (0% of page weight)
Unused JS 23 KB
0.01g unnecessary CO2 per visit
Actual transfer 12599 KB
Theoretical minimum 12575 KB
Potential savings 23 KB (0.01g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization91 images, 36284 KB total, 44 KB wastedINFO
Image Optimization
91 images, 36284 KB total, 44 KB wasted
Image Optimization Audit
Total Images
91
Total Size
36284 KB
Oversized
1
Wasted
44 KB
1 missing dimensions 89 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.