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

1.60g CO2 per view

FIX

1.60g CO2 per view

1.60g CO2 per page view

This page transfers 6.8 MB, producing an estimated 1.60g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.33g, end-user device 1.23g.

Got: 1.60g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 191.8 kg CO2/year

With 10,000 page views per month, this page would generate approximately 191.8 kg of CO2 annually — equivalent to charging 23977 smartphones.

Green hosting reduces data center emissions

1.60g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 22% of websites

Sustainable Web Design model v4 · Page size: 6.8 MB

Your site

1.60g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.04g

Network

0.33g

End-user device

1.23g

At 10,000 monthly views: Monthly: 16.0 kg · Annual: 191.8 kg · ≈ 23977 smartphone charges

Carbon Budget

Action

78th percentile

FIX

78th percentile

1.60g CO2 — above the median website (0.60g)

Heavier than an estimated 22% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 78th percentile

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

Top 10%

Target

Median website

1.60g

78th percentile

Cleaner than 22% of websites

✗ Above the median website

vs Median 166% more

vs Target 220% 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

87% efficient

REVIEW

87% efficient

Transfer efficiency: 87%

An estimated 884 KB (13%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 884 KB of unused JavaScript. This wasted data produces 0.20g of unnecessary CO2 per page view.

Total waste: 884 KB (13% of page weight)

Unused JS 884 KB

0.20g unnecessary CO2 per visit

Actual transfer 6915 KB

Theoretical minimum 6030 KB

Potential savings 884 KB (0.20g CO2)

See Deep Analysis sections above for specific optimizations.

A+

Repeat Visit Weight

96% cached

PASS

96% cached

96% reduction on repeat visits

Returning visitors download only 303 KB (vs 6915 KB first visit). 640 of 652 resources are served from browser cache, saving 1.53g CO2 per repeat visit.

Repeat visit: 0.07g CO2 (first visit: 1.60g)

First visit

6915 KB

Repeat visit

303 KB

96% reduction on repeat visits

Saving 1.53g CO2 per returning visitor

640 resources served from cache · 12 resources re-downloaded

A+

Web Font Weight Variants

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

PASS

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

3 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

157 images, 448 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

157

Total Size

448 KB

1 missing alt text 7 missing dimensions 8 missing lazy loading

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