https://office-project-beat-box-front-end.vercel.app
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
70
GRADE
C
FIX
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
FCO2 Per Page LoadAction15.10g CO2 per viewFIX
CO2 Per Page Load
Action15.10g CO2 per view
15.10g CO2 per view
Critical::
15.10g CO2 per page view
This page transfers 63.8 MB, producing an estimated 15.10g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.38g, network 3.12g, end-user device 11.60g.
Got: 15.10g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 1812.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 1812.4 kg of CO2 annually — equivalent to charging 226554 smartphones.
Info::
Green hosting reduces data center emissions
15.10g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 63.8 MB
Your site
15.10g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.38g
Network
3.12g
End-user device
11.60g
At 10,000 monthly views: Monthly: 151.0 kg · Annual: 1812.4 kg · ≈ 226554 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
15.10g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
15.10g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 2417% more
vs Target 2921% 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+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Vercel, CDN: Vercel
Info::
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
Info::
Vercel: Hosted on AWS/Google Cloud with 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 Hosting✓ Green Hosted
Hosting Vercel✓CDN Vercel✓
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
Vercel: Hosted on AWS/Google Cloud with renewable energy commitments
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 3 KB (vs 65344 KB first visit). 215 of 217 resources are served from browser cache, saving 15.10g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 15.10g)
First visit
65344 KB
Repeat visit
3 KB
100% reduction on repeat visits
Saving 15.10g CO2 per returning visitor
215 resources served from cache · 2 resources re-downloaded
A+Transfer Efficiency100% efficientPASS
Transfer Efficiency
100% efficient
100% efficient
Info::
Transfer efficiency: 100%
Only 111 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 111 KB (0% of page weight)
Unused JS 111 KB
0.03g unnecessary CO2 per visit
Actual transfer 65344 KB
Theoretical minimum 65232 KB
Potential savings 111 KB (0.03g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization30 images, 6735 KB total, 1658 KB wastedINFO
Image Optimization
30 images, 6735 KB total, 1658 KB wasted
Image Optimization Audit
Total Images
30
Total Size
6735 KB
Oversized
12
Wasted
1658 KB
30 missing dimensions 19 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.