Sustainability

· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Device:

Mobile Desktop

Checks

4 PASS 1 REVIEW 2 FIX

CO2 Per Page Load

Action

1.50g CO2 per view

FIX

1.50g CO2 per view

1.50g CO2 per page view

This page transfers 6.3 MB, producing an estimated 1.50g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.31g, end-user device 1.15g.

Got: 1.50g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 179.6 kg CO2/year

With 10,000 page views per month, this page would generate approximately 179.6 kg of CO2 annually — equivalent to charging 22445 smartphones.

Green hosting reduces data center emissions

1.50g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 25% of websites

Sustainable Web Design model v4 · Page size: 6.3 MB

Your site

1.50g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.04g

Network

0.31g

End-user device

1.15g

At 10,000 monthly views: Monthly: 15.0 kg · Annual: 179.6 kg · ≈ 22445 smartphone charges

Carbon Budget

Action

75th percentile

FIX

75th percentile

1.50g CO2 — above the median website (0.60g)

Heavier than an estimated 25% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 75th percentile

Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.

Top 10%

Target

Median website

1.50g

75th percentile

Cleaner than 25% of websites

✗ Above the median website

vs Median 149% more

vs Target 199% more

Transfer Efficiency

87% efficient

REVIEW

87% efficient

Transfer efficiency: 87%

An estimated 827 KB (13%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 827 KB of unused JavaScript. This wasted data produces 0.19g of unnecessary CO2 per page view.

Total waste: 827 KB (13% of page weight)

Unused JS 827 KB

0.19g unnecessary CO2 per visit

Actual transfer 6473 KB

Theoretical minimum 5646 KB

Potential savings 827 KB (0.19g CO2)

See Deep Analysis sections above for specific optimizations.

A+

Green Hosting

Green (both)

PASS

Green (both)

Both hosting and CDN use renewable energy

Got: Hosting: GoDaddy, CDN: Cloudflare

GoDaddy: Verified by the Green Web Foundation

Cloudflare: 100% renewable energy for global network since 2019

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 Weight

97% cached

PASS

97% cached

97% reduction on repeat visits

Returning visitors download only 208 KB (vs 6473 KB first visit). 416 of 420 resources are served from browser cache, saving 1.45g CO2 per repeat visit.

Repeat visit: 0.05g CO2 (first visit: 1.50g)

First visit

6473 KB

Repeat visit

208 KB

97% reduction on repeat visits

Saving 1.45g CO2 per returning visitor

416 resources served from cache · 4 resources re-downloaded

A+

Web Font Weight Variants

1 font weights loaded across 1 famil(y/ies) -- reasonable

PASS

1 font weights loaded across 1 famil(y/ies) -- reasonable

1 font weight(s) loaded across 1 famil(y/ies)

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Image Optimization

143 images, 948 KB total, 122 KB wasted

INFO

Image Optimization Audit

Total Images

143

Total Size

948 KB

Oversized

Wasted

122 KB

18 missing dimensions 18 missing lazy loading

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.