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https://expertroofingwestchester.com

Sustainability

· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
62
GRADE
D
FIX
2
REVIEW
3
PASS
2
INFO
1
Device:
Mobile Desktop
Checks
8
2 PASS 3 REVIEW 2 FIX
F
CO2 Per Page Load
Action
2.22g CO2 per view
FIX
2.22g CO2 per view
Critical::
2.22g CO2 per page view
This page transfers 9.4 MB, producing an estimated 2.22g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.06g, network 0.46g, end-user device 1.71g.
Got: 2.22g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 266.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 266.8 kg of CO2 annually — equivalent to charging 33353 smartphones.
Info::
Green hosting reduces data center emissions

2.22g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 9.4 MB

Your site
2.22g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.06g
Network
0.46g
End-user device
1.71g
At 10,000 monthly views: Monthly: 22.2 kg · Annual: 266.8 kg · ≈ 33353 smartphone charges
F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
2.22g 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

2.22g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 271% more
vs Target 345% more
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
Nexcess.net LLC uses renewable energy
Info::
Nexcess.net LLC: Verified by the Green Web Foundation
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 Nexcess.net LLC✓CDN Not identified✗

Nexcess.net LLC: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

B
Transfer Efficiency
78% efficient
REVIEW
78% efficient
Info::
Transfer efficiency: 78%
An estimated 2070 KB (22%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 2070 KB of unused JavaScript. This wasted data produces 0.48g of unnecessary CO2 per page view.
78% efficient

Total waste: 2070 KB (22% of page weight)

Unused JS 2070 KB

0.48g unnecessary CO2 per visit

Actual transfer 9619 KB
Theoretical minimum 7549 KB
Potential savings 2070 KB (0.48g CO2)

See Deep Analysis sections above for specific optimizations.

C
Web Font Weight Variants
Action
37 font weights loaded across 3 famil(y/ies)
REVIEW
37 font weights loaded across 3 famil(y/ies)
Warning::
37 font weights loaded -- likely 100+ KB of unused payload
Loading 37 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: Montserrat, Open Sans, Roboto%3A400%2C500%2C600%2C700%7CInter%3A800%7CInter%3A800%7CInter%3A800%7CInter%3A800%7CInter%3A800%7CInter%3A700%2C400%2C500%2C600.
A+
Repeat Visit Weight
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 135 KB (vs 9619 KB first visit). 236 of 240 resources are served from browser cache, saving 2.19g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 2.22g)
First visit
9619 KB
Repeat visit
135 KB

99% reduction on repeat visits

Saving 2.19g CO2 per returning visitor

236 resources served from cache · 4 resources re-downloaded

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Nexcess.net LLC

Image Optimization
72 images, 1951 KB total, 1163 KB wasted
INFO

Image Optimization Audit

Total Images

72

Total Size

1951 KB

Oversized

17

Wasted

1163 KB

10 missing dimensions 14 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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