https://mhjys.qingtiankjysz.cfd/#/
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
80
GRADE
B
FIX
1
REVIEW
4
PASS
2
INFO
1
Checks
82 PASS 4 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
BCO2 Per Page Load0.57g CO2 per viewREVIEW
CO2 Per Page Load
0.57g CO2 per view
0.57g CO2 per view
Info::
0.57g CO2 per page view
This page transfers 2.0 MB, producing an estimated 0.57g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.11g, network 0.10g, end-user device 0.37g.
Got: 0.57g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 68.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 68.5 kg of CO2 annually — equivalent to charging 8566 smartphones.
0.57g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 53% of websites
Sustainable Web Design model v4 · Page size: 2.0 MB
Your site
0.57g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.11g
Network
0.10g
End-user device
0.37g
At 10,000 monthly views: Monthly: 5.7 kg · Annual: 68.5 kg · ≈ 8566 smartphone charges
BCarbon Budget47th percentileREVIEW
Carbon Budget
47th percentile
47th percentile
Info::
0.57g CO2 — below the median website (0.60g)
Better than an estimated 53% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
Info::
Estimated 47th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.57g
47th percentile
Cleaner than 53% of websites
✗ Above the median website
vs Median 5% cleaner ✓
vs Target 14% more
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 Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 0 KB (vs 2065 KB first visit). 79 of 80 resources are served from browser cache, saving 0.57g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.57g)
First visit
2065 KB
Repeat visit
0 KB
100% reduction on repeat visits
Saving 0.57g CO2 per returning visitor
79 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency96% efficientPASS
Transfer Efficiency
96% efficient
96% efficient
Info::
Transfer efficiency: 96%
Only 77 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 77 KB (4% of page weight)
Unused JS 77 KB
0.02g unnecessary CO2 per visit
Actual transfer 2065 KB
Theoretical minimum 1987 KB
Potential savings 77 KB (0.02g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization23 images, 429 KB total, 402 KB wastedINFO
Image Optimization
23 images, 429 KB total, 402 KB wasted
Image Optimization Audit
Total Images
23
Total Size
429 KB
Oversized
20
Wasted
402 KB
23 missing alt text 23 missing dimensions 9 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.