https://origopg-mwnz8lgk.manus.space
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
85
GRADE
B
FIX
0
REVIEW
3
PASS
4
INFO
1
Checks
84 PASS 3 REVIEW
BCO2 Per Page Load0.50g CO2 per viewREVIEW
CO2 Per Page Load
0.50g CO2 per view
0.50g CO2 per view
Info::
0.50g CO2 per page view
This page transfers 2.1 MB, producing an estimated 0.50g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.10g, end-user device 0.39g.
Got: 0.50g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 60.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 60.5 kg of CO2 annually — equivalent to charging 7566 smartphones.
Info::
Green hosting reduces data center emissions
0.50g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 60% of websites
Sustainable Web Design model v4 · Page size: 2.1 MB
Your site
0.50g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.10g
End-user device
0.39g
At 10,000 monthly views: Monthly: 5.0 kg · Annual: 60.5 kg · ≈ 7566 smartphone charges
BCarbon Budget40th percentileREVIEW
Carbon Budget
40th percentile
40th percentile
Info::
0.50g CO2 — below the median website (0.60g)
Better than an estimated 60% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
Info::
Estimated 40th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.50g
40th percentile
Cleaner than 60% of websites
✗ Above the median website
vs Median 16% cleaner ✓
vs Target 1% more
CWeb Font Weight VariantsAction9 font weights loaded across 3 famil(y/ies)REVIEW
Web Font Weight Variants
Action9 font weights loaded across 3 famil(y/ies)
9 font weights loaded across 3 famil(y/ies)
Warning::
9 font weights loaded -- likely 100+ KB of unused payload
Loading 9 font weights typically transfers 200-400 KB just for fonts. Most pages legitimately use 2-3 weights (regular + bold, maybe medium). Audit which weights your stylesheet actually applies and trim the Google Fonts URL accordingly. Affected families: IBM Plex Mono, IBM Plex Sans, Space Grotesk.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Express, CDN: Cloudflare
Info::
Express: 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 Express✓CDN Cloudflare✓
Express: 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 Weight95% cachedPASS
Repeat Visit Weight
95% cached
95% cached
Info::
95% reduction on repeat visits
Returning visitors download only 103 KB (vs 2182 KB first visit). 30 of 31 resources are served from browser cache, saving 0.48g CO2 per repeat visit.
Info::
Repeat visit: 0.02g CO2 (first visit: 0.50g)
First visit
2182 KB
Repeat visit
103 KB
95% reduction on repeat visits
Saving 0.48g CO2 per returning visitor
30 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency94% efficientPASS
Transfer Efficiency
94% efficient
94% efficient
Info::
Transfer efficiency: 94%
Only 140 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 140 KB (6% of page weight)
Unused JS 140 KB
0.03g unnecessary CO2 per visit
Actual transfer 2182 KB
Theoretical minimum 2042 KB
Potential savings 140 KB (0.03g 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 Optimization4 images, 0 KB total, 0 KB wastedINFO
Image Optimization
4 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
4
Total Size
0 KB
Oversized
2
4 missing dimensions 3 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.