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

1.14g CO2 per view

FIX

1.14g CO2 per view

1.14g CO2 per page view

This page transfers 4.8 MB, producing an estimated 1.14g 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: 1.14g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 136.2 kg CO2/year

With 10,000 page views per month, this page would generate approximately 136.2 kg of CO2 annually — equivalent to charging 17026 smartphones.

Green hosting reduces data center emissions

1.14g

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

1.14g

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: 11.4 kg · Annual: 136.2 kg · ≈ 17026 smartphone charges

Carbon Budget

Action

65th percentile

FIX

65th percentile

1.14g 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

1.14g

65th percentile

Cleaner than 35% of websites

✗ Above the median website

vs Median 89% more

vs Target 127% more

Transfer Efficiency

86% efficient

REVIEW

86% efficient

Transfer efficiency: 86%

An estimated 667 KB (14%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 667 KB of unused JavaScript. This wasted data produces 0.15g of unnecessary CO2 per page view.

Total waste: 667 KB (14% of page weight)

Unused JS 667 KB

0.15g unnecessary CO2 per visit

Actual transfer 4910 KB

Theoretical minimum 4243 KB

Potential savings 667 KB (0.15g 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

96% cached

PASS

96% cached

96% reduction on repeat visits

Returning visitors download only 208 KB (vs 4910 KB first visit). 335 of 339 resources are served from browser cache, saving 1.09g CO2 per repeat visit.

Repeat visit: 0.05g CO2 (first visit: 1.14g)

First visit

4910 KB

Repeat visit

208 KB

96% reduction on repeat visits

Saving 1.09g CO2 per returning visitor

335 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.