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

5 PASS 2 FIX

CO2 Per Page Load

Action

1.36g CO2 per view

FIX

1.36g CO2 per view

1.36g CO2 per page view

This page transfers 5.7 MB, producing an estimated 1.36g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.28g, end-user device 1.04g.

Got: 1.36g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 163.0 kg CO2/year

With 10,000 page views per month, this page would generate approximately 163.0 kg of CO2 annually — equivalent to charging 20376 smartphones.

Green hosting reduces data center emissions

1.36g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 29% of websites

Sustainable Web Design model v4 · Page size: 5.7 MB

Your site

1.36g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.03g

Network

0.28g

End-user device

1.04g

At 10,000 monthly views: Monthly: 13.6 kg · Annual: 163.0 kg · ≈ 20376 smartphone charges

Carbon Budget

Action

71th percentile

FIX

71th percentile

1.36g CO2 — above the median website (0.60g)

Heavier than an estimated 29% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 71th percentile

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

Top 10%

Target

Median website

1.36g

71st percentile

Cleaner than 29% of websites

✗ Above the median website

vs Median 126% more

vs Target 172% more

A+

Green Hosting

Green (both)

PASS

Green (both)

Both hosting and CDN use renewable energy

Got: Hosting: Kinsta, CDN: Cloudflare

Kinsta: 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 Kinsta✓CDN Cloudflare✓

Kinsta: 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 67 KB (vs 5877 KB first visit). 70 of 72 resources are served from browser cache, saving 1.34g CO2 per repeat visit.

Repeat visit: 0.02g CO2 (first visit: 1.36g)

First visit

5877 KB

Repeat visit

67 KB

99% reduction on repeat visits

Saving 1.34g CO2 per returning visitor

70 resources served from cache · 2 resources re-downloaded

A+

Transfer Efficiency

90% efficient

PASS

90% efficient

Transfer efficiency: 90%

Only 582 KB of potential savings identified. Your page is well-optimized for size.

Total waste: 582 KB (10% of page weight)

Unused JS 582 KB

0.13g unnecessary CO2 per visit

Actual transfer 5877 KB

Theoretical minimum 5294 KB

Potential savings 582 KB (0.13g CO2)

See Deep Analysis sections above for specific optimizations.

A+

Web Font Weight Variants

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

PASS

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

4 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: Something Familiar

Image Optimization

4 images, 309 KB total, 117 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

309 KB

Oversized

Wasted

117 KB

2 missing lazy loading

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