https://ais-dev-psgakquiwaol5aevbdjv6g-759203062707.asia-east1.run.app
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
79
GRADE
C
FIX
1
REVIEW
3
PASS
3
INFO
1
Checks
83 PASS 3 REVIEW 1 FIX
DTransfer EfficiencyAction58% efficientFIX
Transfer Efficiency
Action58% efficient
58% efficient
Warning::
Transfer efficiency: 58%
An estimated 364 KB (42%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 364 KB of unused JavaScript. This wasted data produces 0.08g of unnecessary CO2 per page view.
Total waste: 364 KB (42% of page weight)
Unused JS 364 KB
0.08g unnecessary CO2 per visit
Actual transfer 871 KB
Theoretical minimum 506 KB
Potential savings 364 KB (0.08g CO2)
See Deep Analysis sections above for specific optimizations.
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
Google Cloud uses renewable energy
Info::
Google Cloud: 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 Google Cloud✓CDN Not identified✗
Google Cloud: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
BRepeat Visit Weight79% cachedREVIEW
Repeat Visit Weight
79% cached
79% cached
Info::
79% reduction on repeat visits
Returning visitors download only 185 KB (vs 871 KB first visit). 26 of 30 resources are served from browser cache, saving 0.16g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 0.20g)
First visit
871 KB
Repeat visit
185 KB
79% reduction on repeat visits
Saving 0.16g CO2 per returning visitor
26 resources served from cache · 4 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.
ACO2 Per Page Load0.20g CO2 per viewPASS
CO2 Per Page Load
0.20g CO2 per view
0.20g CO2 per view
Info::
0.20g CO2 per page view
This page transfers 0.9 MB, producing an estimated 0.20g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.04g, end-user device 0.15g.
Got: 0.20g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 24.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 24.2 kg of CO2 annually — equivalent to charging 3022 smartphones.
Info::
Green hosting reduces data center emissions
0.20g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 90% of websites
Sustainable Web Design model v4 · Page size: 0.9 MB
Your site
0.20g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.04g
End-user device
0.15g
At 10,000 monthly views: Monthly: 2.0 kg · Annual: 24.2 kg · ≈ 3022 smartphone charges
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.20g 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
0.20g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 66% cleaner ✓
vs Target 60% 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: Google Cloud
Image Optimization1 images, 0 KB total, 0 KB wastedINFO
Image Optimization
1 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
1
Total Size
0 KB
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.