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

1.13g CO2 per view

FIX

1.13g CO2 per view

1.13g CO2 per page view

This page transfers 4.8 MB, producing an estimated 1.13g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.23g, end-user device 0.87g.

Got: 1.13g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 135.9 kg CO2/year

With 10,000 page views per month, this page would generate approximately 135.9 kg of CO2 annually — equivalent to charging 16992 smartphones.

Green hosting reduces data center emissions

1.13g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 35% of websites

Sustainable Web Design model v4 · Page size: 4.8 MB

Your site

1.13g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.03g

Network

0.23g

End-user device

0.87g

At 10,000 monthly views: Monthly: 11.3 kg · Annual: 135.9 kg · ≈ 16992 smartphone charges

Carbon Budget

Action

65th percentile

FIX

65th percentile

1.13g CO2 — above the median website (0.60g)

Heavier than an estimated 35% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 65th percentile

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

Top 10%

Target

Median website

1.13g

65th percentile

Cleaner than 35% of websites

✗ Above the median website

vs Median 89% more

vs Target 127% 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 674 KB (14%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 674 KB of unused JavaScript. This wasted data produces 0.16g of unnecessary CO2 per page view.

Total waste: 674 KB (14% of page weight)

Unused JS 674 KB

0.16g unnecessary CO2 per visit

Actual transfer 4900 KB

Theoretical minimum 4226 KB

Potential savings 674 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 86 KB (vs 4900 KB first visit). 553 of 556 resources are served from browser cache, saving 1.11g CO2 per repeat visit.

Repeat visit: 0.02g CO2 (first visit: 1.13g)

First visit

4900 KB

Repeat visit

86 KB

98% reduction on repeat visits

Saving 1.11g CO2 per returning visitor

553 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.