https://iacesport.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
83
GRADE
B
FIX
1
REVIEW
3
PASS
3
INFO
1
Checks
83 PASS 3 REVIEW 1 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
CRepeat Visit WeightAction53% cachedREVIEW
Repeat Visit Weight
Action53% cached
53% cached
Warning::
Only 53% reduction on repeat visits
Returning visitors still download 186 KB — only 53% less than the first visit (400 KB). 1 resources lack proper caching headers. See the Performance tab's HTTP Caching section for specific recommendations.
Info::
Repeat visit: 0.05g CO2 (first visit: 0.11g)
First visit
400 KB
Repeat visit
186 KB
53% reduction on repeat visits
Saving 0.06g CO2 per returning visitor
26 resources served from cache · 1 resources re-downloaded
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+CO2 Per Page Load0.11g CO2 per viewPASS
CO2 Per Page Load
0.11g CO2 per view
0.11g CO2 per view
Info::
0.11g CO2 per page view
This page transfers 0.4 MB, producing an estimated 0.11g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.02g, end-user device 0.07g.
Got: 0.11g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 13.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 13.3 kg of CO2 annually — equivalent to charging 1661 smartphones.
0.11g
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
0.11g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.02g
End-user device
0.07g
At 10,000 monthly views: Monthly: 1.1 kg · Annual: 13.3 kg · ≈ 1661 smartphone charges
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.11g 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
0.11g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 82% cleaner ✓
vs Target 78% cleaner ✓
A+Transfer Efficiency100% efficientPASS
Transfer Efficiency
100% efficient
100% efficient
Info::
Transfer efficiency: 100%
Only 0 KB of potential savings identified. Your page is well-optimized for size.
Actual transfer 400 KB
Theoretical minimum 400 KB
See Deep Analysis sections above for specific optimizations.
Image Optimization154 images, 95 KB total, 91 KB wastedINFO
Image Optimization
154 images, 95 KB total, 91 KB wasted
Image Optimization Audit
Total Images
154
Total Size
95 KB
Oversized
1
Wasted
91 KB
116 missing dimensions 115 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.