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

1.71g CO2 per view

FIX

1.71g CO2 per view

1.71g CO2 per page view

This page transfers 7.2 MB, producing an estimated 1.71g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.35g, end-user device 1.31g.

Got: 1.71g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 205.2 kg CO2/year

With 10,000 page views per month, this page would generate approximately 205.2 kg of CO2 annually — equivalent to charging 25648 smartphones.

Green hosting reduces data center emissions

1.71g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 19% of websites

Sustainable Web Design model v4 · Page size: 7.2 MB

Your site

1.71g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.04g

Network

0.35g

End-user device

1.31g

At 10,000 monthly views: Monthly: 17.1 kg · Annual: 205.2 kg · ≈ 25648 smartphone charges

Carbon Budget

Action

81th percentile

FIX

81th percentile

1.71g CO2 — above the median website (0.60g)

Heavier than an estimated 19% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 81th percentile

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

Top 10%

Target

Median website

1.71g

81st percentile

Cleaner than 19% of websites

✗ Above the median website

vs Median 185% more

vs Target 242% 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)

Cloudflare CDN uses renewable energy

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

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✓

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 38 KB (vs 7397 KB first visit). 180 of 182 resources are served from browser cache, saving 1.70g CO2 per repeat visit.

Repeat visit: 0.01g CO2 (first visit: 1.71g)

First visit

7397 KB

Repeat visit

38 KB

99% reduction on repeat visits

Saving 1.70g CO2 per returning visitor

180 resources served from cache · 2 resources re-downloaded

A+

Transfer Efficiency

93% efficient

PASS

93% efficient

Transfer efficiency: 93%

Only 480 KB of potential savings identified. Your page is well-optimized for size.

Total waste: 480 KB (7% of page weight)

Unused JS 480 KB

0.11g unnecessary CO2 per visit

Actual transfer 7397 KB

Theoretical minimum 6916 KB

Potential savings 480 KB (0.11g CO2)

See Deep Analysis sections above for specific optimizations.

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)

Image Optimization

17 images, 1379 KB total, 907 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

1379 KB

Oversized

Wasted

907 KB

4 missing dimensions 7 missing lazy loading

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