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

1.33g CO2 per view

FIX

1.33g CO2 per view

1.33g CO2 per page view

This page transfers 5.6 MB, producing an estimated 1.33g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.27g, end-user device 1.02g.

Got: 1.33g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 159.5 kg CO2/year

With 10,000 page views per month, this page would generate approximately 159.5 kg of CO2 annually — equivalent to charging 19940 smartphones.

Green hosting reduces data center emissions

1.33g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 30% of websites

Sustainable Web Design model v4 · Page size: 5.6 MB

Your site

1.33g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.03g

Network

0.27g

End-user device

1.02g

At 10,000 monthly views: Monthly: 13.3 kg · Annual: 159.5 kg · ≈ 19940 smartphone charges

Carbon Budget

Action

70th percentile

FIX

70th percentile

1.33g CO2 — above the median website (0.60g)

Heavier than an estimated 30% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 70th percentile

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

Top 10%

Target

Median website

1.33g

70th percentile

Cleaner than 30% of websites

✗ Above the median website

vs Median 122% more

vs Target 166% 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 2 KB (vs 5751 KB first visit). 46 of 47 resources are served from browser cache, saving 1.33g CO2 per repeat visit.

Repeat visit: 0.00g CO2 (first visit: 1.33g)

First visit

5751 KB

Repeat visit

2 KB

100% reduction on repeat visits

Saving 1.33g CO2 per returning visitor

46 resources served from cache · 1 resources re-downloaded

A+

Transfer Efficiency

97% efficient

PASS

97% efficient

Transfer efficiency: 97%

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

Total waste: 201 KB (3% of page weight)

Unused JS 201 KB

0.05g unnecessary CO2 per visit

Actual transfer 5751 KB

Theoretical minimum 5550 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.