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

1.07g CO2 per view

FIX

1.07g CO2 per view

1.07g CO2 per page view

This page transfers 4.5 MB, producing an estimated 1.07g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.22g, end-user device 0.82g.

Got: 1.07g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 128.7 kg CO2/year

With 10,000 page views per month, this page would generate approximately 128.7 kg of CO2 annually — equivalent to charging 16087 smartphones.

Green hosting reduces data center emissions

1.07g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 37% of websites

Sustainable Web Design model v4 · Page size: 4.5 MB

Your site

1.07g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.03g

Network

0.22g

End-user device

0.82g

At 10,000 monthly views: Monthly: 10.7 kg · Annual: 128.7 kg · ≈ 16087 smartphone charges

Carbon Budget

Action

63th percentile

FIX

63th percentile

1.07g CO2 — above the median website (0.60g)

Heavier than an estimated 37% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 63th percentile

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

Top 10%

Target

Median website

1.07g

63rd percentile

Cleaner than 37% of websites

✗ Above the median website

vs Median 79% more

vs Target 115% more

Transfer Efficiency

78% efficient

REVIEW

78% efficient

Transfer efficiency: 78%

An estimated 1031 KB (22%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1031 KB of unused JavaScript. This wasted data produces 0.24g of unnecessary CO2 per page view.

Total waste: 1031 KB (22% of page weight)

Unused JS 1031 KB

0.24g unnecessary CO2 per visit

Actual transfer 4640 KB

Theoretical minimum 3608 KB

Potential savings 1031 KB (0.24g 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

99% cached

PASS

99% cached

99% reduction on repeat visits

Returning visitors download only 50 KB (vs 4640 KB first visit). 286 of 288 resources are served from browser cache, saving 1.06g CO2 per repeat visit.

Repeat visit: 0.01g CO2 (first visit: 1.07g)

First visit

4640 KB

Repeat visit

50 KB

99% reduction on repeat visits

Saving 1.06g CO2 per returning visitor

286 resources served from cache · 2 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

200 images, 788 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

200

Total Size

788 KB

Oversized

2 missing alt text 174 missing dimensions 194 missing lazy loading

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