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

3 PASS 2 REVIEW 2 FIX

CO2 Per Page Load

Action

1.10g CO2 per view

FIX

1.10g CO2 per view

1.10g CO2 per page view

This page transfers 4.7 MB, producing an estimated 1.10g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.23g, end-user device 0.85g.

Got: 1.10g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 132.5 kg CO2/year

With 10,000 page views per month, this page would generate approximately 132.5 kg of CO2 annually — equivalent to charging 16561 smartphones.

Green hosting reduces data center emissions

1.10g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 36% of websites

Sustainable Web Design model v4 · Page size: 4.7 MB

Your site

1.10g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.03g

Network

0.23g

End-user device

0.85g

At 10,000 monthly views: Monthly: 11.0 kg · Annual: 132.5 kg · ≈ 16561 smartphone charges

Carbon Budget

Action

64th percentile

FIX

64th percentile

1.10g CO2 — above the median website (0.60g)

Heavier than an estimated 36% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 64th percentile

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

Top 10%

Target

Median website

1.10g

64th percentile

Cleaner than 36% of websites

✗ Above the median website

vs Median 84% more

vs Target 121% more

Green Hosting

Green (hosting)

REVIEW

Green (hosting)

Cloudflare uses renewable energy

Cloudflare: Verified by the Green Web Foundation

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 Cloudflare✓CDN Shopify✗

Cloudflare: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

Transfer Efficiency

86% efficient

REVIEW

86% efficient

Transfer efficiency: 86%

An estimated 673 KB (14%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 673 KB of unused JavaScript. This wasted data produces 0.16g of unnecessary CO2 per page view.

Total waste: 673 KB (14% of page weight)

Unused JS 673 KB

0.16g unnecessary CO2 per visit

Actual transfer 4776 KB

Theoretical minimum 4103 KB

Potential savings 673 KB (0.16g CO2)

See Deep Analysis sections above for specific optimizations.

A+

Repeat Visit Weight

98% cached

PASS

98% cached

98% reduction on repeat visits

Returning visitors download only 87 KB (vs 4776 KB first visit). 544 of 547 resources are served from browser cache, saving 1.08g CO2 per repeat visit.

Repeat visit: 0.02g CO2 (first visit: 1.10g)

First visit

4776 KB

Repeat visit

87 KB

98% reduction on repeat visits

Saving 1.08g CO2 per returning visitor

544 resources served from cache · 3 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

38 images, 326 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

326 KB

2 missing dimensions 6 missing lazy loading

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