Sustainability

· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.

SCORE

100

GRADE

A+

FIX

REVIEW

PASS

INFO

Device:

Mobile Desktop

Checks

7 PASS

A+

CO2 Per Page Load

0.18g CO2 per view

PASS

0.18g CO2 per view

0.18g CO2 per page view

This page transfers 0.7 MB, producing an estimated 0.18g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.00g, network 0.04g, end-user device 0.14g.

Got: 0.18g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 21.2 kg CO2/year

With 10,000 page views per month, this page would generate approximately 21.2 kg of CO2 annually — equivalent to charging 2643 smartphones.

Green hosting reduces data center emissions

0.18g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 90% of websites

Sustainable Web Design model v4 · Page size: 0.7 MB

Your site

0.18g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.00g

Network

0.04g

End-user device

0.14g

At 10,000 monthly views: Monthly: 1.8 kg · Annual: 21.2 kg · ≈ 2643 smartphone charges

A+

Green Hosting

Green (both)

PASS

Green (both)

Both hosting and CDN use renewable energy

Got: Hosting: Something Familiar, CDN: Cloudflare

Something Familiar: 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 Something Familiar✓CDN Cloudflare✓

Something Familiar: 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 7 KB (vs 762 KB first visit). 23 of 24 resources are served from browser cache, saving 0.17g CO2 per repeat visit.

Repeat visit: 0.00g CO2 (first visit: 0.18g)

First visit

762 KB

Repeat visit

7 KB

99% reduction on repeat visits

Saving 0.17g CO2 per returning visitor

23 resources served from cache · 1 resources re-downloaded

A+

Carbon Budget

10th percentile

PASS

10th percentile

0.18g CO2 — below the sustainability target of 0.50g

Cleaner than an estimated 90% of websites analyzed. This page meets the Web Sustainability Guidelines target.

Estimated 10th percentile

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

Top 10%

Target

Median website

0.18g

10th percentile

Cleaner than 90% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 71% cleaner ✓

vs Target 65% cleaner ✓

A+

Transfer Efficiency

90% efficient

PASS

90% efficient

Transfer efficiency: 90%

Only 73 KB of potential savings identified. Your page is well-optimized for size.

Total waste: 73 KB (10% of page weight)

Unused JS 73 KB

0.02g unnecessary CO2 per visit

Actual transfer 762 KB

Theoretical minimum 688 KB

Potential savings 73 KB (0.02g 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

17 images, 415 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

415 KB

Oversized

3 missing dimensions 17 missing lazy loading

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