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

2.90g CO2 per view

FIX

2.90g CO2 per view

2.90g CO2 per page view

This page transfers 12.3 MB, producing an estimated 2.90g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.07g, network 0.60g, end-user device 2.23g.

Got: 2.90g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 348.1 kg CO2/year

With 10,000 page views per month, this page would generate approximately 348.1 kg of CO2 annually — equivalent to charging 43509 smartphones.

Green hosting reduces data center emissions

2.90g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 12.3 MB

Your site

2.90g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.07g

Network

0.60g

End-user device

2.23g

At 10,000 monthly views: Monthly: 29.0 kg · Annual: 348.1 kg · ≈ 43509 smartphone charges

Carbon Budget

Action

95th percentile

FIX

95th percentile

2.90g 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.

Estimated 95th percentile

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

Top 10%

Target

Median website

2.90g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 383% more

vs Target 480% 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

A+

Repeat Visit Weight

99% cached

PASS

99% cached

99% reduction on repeat visits

Returning visitors download only 89 KB (vs 12549 KB first visit). 436 of 438 resources are served from browser cache, saving 2.88g CO2 per repeat visit.

Repeat visit: 0.02g CO2 (first visit: 2.90g)

First visit

12549 KB

Repeat visit

89 KB

99% reduction on repeat visits

Saving 2.88g CO2 per returning visitor

436 resources served from cache · 2 resources re-downloaded

A+

Transfer Efficiency

91% efficient

PASS

91% efficient

Transfer efficiency: 91%

Only 1107 KB of potential savings identified. Your page is well-optimized for size.

Total waste: 1107 KB (9% of page weight)

Unused JS 1107 KB

0.26g unnecessary CO2 per visit

Actual transfer 12549 KB

Theoretical minimum 11441 KB

Potential savings 1107 KB (0.26g CO2)

See Deep Analysis sections above for specific optimizations.

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

116 images, 2282 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

116

Total Size

2282 KB

2 missing alt text 7 missing dimensions 4 missing lazy loading

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