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

1.63g CO2 per view

FIX

1.63g CO2 per view

1.63g CO2 per page view

This page transfers 6.9 MB, producing an estimated 1.63g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.34g, end-user device 1.25g.

Got: 1.63g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 195.3 kg CO2/year

With 10,000 page views per month, this page would generate approximately 195.3 kg of CO2 annually — equivalent to charging 24416 smartphones.

Green hosting reduces data center emissions

1.63g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 21% of websites

Sustainable Web Design model v4 · Page size: 6.9 MB

Your site

1.63g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.04g

Network

0.34g

End-user device

1.25g

At 10,000 monthly views: Monthly: 16.3 kg · Annual: 195.3 kg · ≈ 24416 smartphone charges

Carbon Budget

Action

79th percentile

FIX

79th percentile

1.63g CO2 — above the median website (0.60g)

Heavier than an estimated 21% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 79th percentile

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

Top 10%

Target

Median website

1.63g

79th percentile

Cleaner than 21% of websites

✗ Above the median website

vs Median 171% more

vs Target 226% more

Transfer Efficiency

82% efficient

REVIEW

82% efficient

Transfer efficiency: 82%

An estimated 1294 KB (18%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1294 KB of unused JavaScript. This wasted data produces 0.30g of unnecessary CO2 per page view.

Total waste: 1294 KB (18% of page weight)

Unused JS 1294 KB

0.30g unnecessary CO2 per visit

Actual transfer 7042 KB

Theoretical minimum 5747 KB

Potential savings 1294 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

90% cached

PASS

90% cached

90% reduction on repeat visits

Returning visitors download only 672 KB (vs 7042 KB first visit). 648 of 670 resources are served from browser cache, saving 1.47g CO2 per repeat visit.

Repeat visit: 0.16g CO2 (first visit: 1.63g)

First visit

7042 KB

Repeat visit

672 KB

90% reduction on repeat visits

Saving 1.47g CO2 per returning visitor

648 resources served from cache · 22 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.