https://www.mossandmolt.com
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
2
REVIEW
1
PASS
4
INFO
1
Checks
84 PASS 1 REVIEW 2 FIX
DCO2 Per Page LoadAction0.83g CO2 per viewFIX
CO2 Per Page Load
Action0.83g CO2 per view
0.83g CO2 per view
Info::
0.83g CO2 per page view
This page transfers 3.5 MB, producing an estimated 0.83g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.17g, end-user device 0.64g.
Got: 0.83g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 99.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 99.5 kg of CO2 annually — equivalent to charging 12439 smartphones.
Info::
Green hosting reduces data center emissions
0.83g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 44% of websites
Sustainable Web Design model v4 · Page size: 3.5 MB
Your site
0.83g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.17g
End-user device
0.64g
At 10,000 monthly views: Monthly: 8.3 kg · Annual: 99.5 kg · ≈ 12439 smartphone charges
DCarbon BudgetAction56th percentileFIX
Carbon Budget
Action56th percentile
56th percentile
Warning::
0.83g CO2 — above the median website (0.60g)
Heavier than an estimated 44% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 56th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.83g
56th percentile
Cleaner than 44% of websites
✗ Above the median website
vs Median 38% more
vs Target 66% 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.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: GoDaddy, CDN: Cloudflare
Info::
GoDaddy: Verified by the Green Web Foundation
Info::
Cloudflare: 100% renewable energy for global network since 2019
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 GoDaddy✓CDN Cloudflare✓
GoDaddy: Verified by the Green Web Foundation
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight92% cachedPASS
Repeat Visit Weight
92% cached
92% cached
Info::
92% reduction on repeat visits
Returning visitors download only 273 KB (vs 3587 KB first visit). 476 of 481 resources are served from browser cache, saving 0.77g CO2 per repeat visit.
Info::
Repeat visit: 0.06g CO2 (first visit: 0.83g)
First visit
3587 KB
Repeat visit
273 KB
92% reduction on repeat visits
Saving 0.77g CO2 per returning visitor
476 resources served from cache · 5 resources re-downloaded
A+Transfer Efficiency99% efficientPASS
Transfer Efficiency
99% efficient
99% efficient
Info::
Transfer efficiency: 99%
Only 35 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 35 KB (1% of page weight)
Unused JS 35 KB
0.01g unnecessary CO2 per visit
Actual transfer 3587 KB
Theoretical minimum 3552 KB
Potential savings 35 KB (0.01g CO2)
See Deep Analysis sections above for specific optimizations.
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: Cloudflare
Image Optimization73 images, 1162 KB total, 0 KB wastedINFO
Image Optimization
73 images, 1162 KB total, 0 KB wasted
Image Optimization Audit
Total Images
73
Total Size
1162 KB
2 missing alt text 24 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.