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

1.28g CO2 per view

FIX

1.28g CO2 per view

1.28g CO2 per page view

This page transfers 5.4 MB, producing an estimated 1.28g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.26g, end-user device 0.98g.

Got: 1.28g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 153.4 kg CO2/year

With 10,000 page views per month, this page would generate approximately 153.4 kg of CO2 annually — equivalent to charging 19177 smartphones.

Green hosting reduces data center emissions

1.28g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 31% of websites

Sustainable Web Design model v4 · Page size: 5.4 MB

Your site

1.28g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.03g

Network

0.26g

End-user device

0.98g

At 10,000 monthly views: Monthly: 12.8 kg · Annual: 153.4 kg · ≈ 19177 smartphone charges

Carbon Budget

Action

69th percentile

FIX

69th percentile

1.28g CO2 — above the median website (0.60g)

Heavier than an estimated 31% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 69th percentile

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

Top 10%

Target

Median website

1.28g

69th percentile

Cleaner than 31% of websites

✗ Above the median website

vs Median 113% more

vs Target 156% more

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

Green Hosting

Green (cdn)

PASS

Green (cdn)

Vercel CDN uses renewable energy

Since most traffic is served through the CDN, the majority of data transfer energy is renewable.

Vercel: Hosted on AWS/Google Cloud with renewable energy commitments

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 Vercel✓

Vercel: Hosted on AWS/Google Cloud with renewable energy commitments

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+

Repeat Visit Weight

100% cached

PASS

100% cached

100% reduction on repeat visits

Returning visitors download only 1 KB (vs 5531 KB first visit). 49 of 50 resources are served from browser cache, saving 1.28g CO2 per repeat visit.

Repeat visit: 0.00g CO2 (first visit: 1.28g)

First visit

5531 KB

Repeat visit

1 KB

100% reduction on repeat visits

Saving 1.28g CO2 per returning visitor

49 resources served from cache · 1 resources re-downloaded

A+

Transfer Efficiency

96% efficient

PASS

96% efficient

Transfer efficiency: 96%

Only 201 KB of potential savings identified. Your page is well-optimized for size.

Total waste: 201 KB (4% of page weight)

Unused JS 201 KB

0.05g unnecessary CO2 per visit

Actual transfer 5531 KB

Theoretical minimum 5330 KB

Potential savings 201 KB (0.05g CO2)

See Deep Analysis sections above for specific optimizations.

A+

Web Font Weight Variants

3 font weights loaded across 3 famil(y/ies) -- reasonable

PASS

3 font weights loaded across 3 famil(y/ies) -- reasonable

3 font weight(s) loaded across 3 famil(y/ies)

Image Optimization

8 images, 1831 KB total, 900 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

1831 KB

Oversized

Wasted

900 KB

4 missing dimensions 1 missing lazy loading

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