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

1.86g CO2 per view

FIX

1.86g CO2 per view

1.86g CO2 per page view

This page transfers 7.8 MB, producing an estimated 1.86g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.05g, network 0.38g, end-user device 1.43g.

Got: 1.86g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 222.9 kg CO2/year

With 10,000 page views per month, this page would generate approximately 222.9 kg of CO2 annually — equivalent to charging 27858 smartphones.

Green hosting reduces data center emissions

1.86g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 15% of websites

Sustainable Web Design model v4 · Page size: 7.8 MB

Your site

1.86g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.05g

Network

0.38g

End-user device

1.43g

At 10,000 monthly views: Monthly: 18.6 kg · Annual: 222.9 kg · ≈ 27858 smartphone charges

Carbon Budget

Action

85th percentile

FIX

85th percentile

1.86g CO2 — above the median website (0.60g)

Heavier than an estimated 15% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 85th percentile

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

Top 10%

Target

Median website

1.86g

85th percentile

Cleaner than 15% of websites

✗ Above the median website

vs Median 210% more

vs Target 271% more

Transfer Efficiency

84% efficient

REVIEW

84% efficient

Transfer efficiency: 84%

An estimated 1301 KB (16%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1301 KB of unused JavaScript. This wasted data produces 0.30g of unnecessary CO2 per page view.

Total waste: 1301 KB (16% of page weight)

Unused JS 1301 KB

0.30g unnecessary CO2 per visit

Actual transfer 8035 KB

Theoretical minimum 6733 KB

Potential savings 1301 KB (0.30g 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

92% cached

PASS

92% cached

92% reduction on repeat visits

Returning visitors download only 672 KB (vs 8035 KB first visit). 696 of 717 resources are served from browser cache, saving 1.70g CO2 per repeat visit.

Repeat visit: 0.16g CO2 (first visit: 1.86g)

First visit

8035 KB

Repeat visit

672 KB

92% reduction on repeat visits

Saving 1.70g CO2 per returning visitor

696 resources served from cache · 21 resources re-downloaded

A+

Web Font Weight Variants

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

PASS

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

2 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

88 images, 600 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

600 KB

18 missing alt text 15 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.