https://tonmr.shop
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
81
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
BTransfer Efficiency87% efficientREVIEW
Transfer Efficiency
87% efficient
87% efficient
Info::
Transfer efficiency: 87%
An estimated 159 KB (13%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 159 KB of unused JavaScript. This wasted data produces 0.04g of unnecessary CO2 per page view.
Total waste: 159 KB (13% of page weight)
Unused JS 159 KB
0.04g unnecessary CO2 per visit
Actual transfer 1226 KB
Theoretical minimum 1066 KB
Potential savings 159 KB (0.04g 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
ACO2 Per Page Load0.34g CO2 per viewPASS
CO2 Per Page Load
0.34g CO2 per view
0.34g CO2 per view
Info::
0.34g CO2 per page view
This page transfers 1.2 MB, producing an estimated 0.34g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.06g, network 0.06g, end-user device 0.22g.
Got: 0.34g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 40.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 40.7 kg of CO2 annually — equivalent to charging 5088 smartphones.
0.34g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 77% of websites
Sustainable Web Design model v4 · Page size: 1.2 MB
Your site
0.34g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.06g
Network
0.06g
End-user device
0.22g
At 10,000 monthly views: Monthly: 3.4 kg · Annual: 40.7 kg · ≈ 5088 smartphone charges
A+Repeat Visit Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 18 KB (vs 1226 KB first visit). 50 of 54 resources are served from browser cache, saving 0.33g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.34g)
First visit
1226 KB
Repeat visit
18 KB
98% reduction on repeat visits
Saving 0.33g CO2 per returning visitor
50 resources served from cache · 4 resources re-downloaded
ACarbon Budget23th percentilePASS
Carbon Budget
23th percentile
23th percentile
Info::
0.34g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 77% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 23th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.34g
23rd percentile
Cleaner than 77% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 43% cleaner ✓
vs Target 32% cleaner ✓
Image Optimization15 images, 416 KB total, 270 KB wastedINFO
Image Optimization
15 images, 416 KB total, 270 KB wasted
Image Optimization Audit
Total Images
15
Total Size
416 KB
Oversized
6
Wasted
270 KB
15 missing dimensions 5 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.