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 3 REVIEW

Green Hosting

Green (hosting)

REVIEW

Green (hosting)

Netsons s.r.l. uses renewable energy

Netsons s.r.l.: Verified by the Green Web Foundation

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 Netsons s.r.l.✓CDN Not identified✗

Netsons s.r.l.: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

Transfer Efficiency

89% efficient

REVIEW

89% efficient

Transfer efficiency: 89%

An estimated 166 KB (11%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 166 KB of unused JavaScript. This wasted data produces 0.04g of unnecessary CO2 per page view.

Total waste: 166 KB (11% of page weight)

Unused JS 166 KB

0.04g unnecessary CO2 per visit

Actual transfer 1501 KB

Theoretical minimum 1334 KB

Potential savings 166 KB (0.04g CO2)

See Deep Analysis sections above for specific optimizations.

Web Font Weight Variants

Action

31 font weights loaded across 2 famil(y/ies)

REVIEW

31 font weights loaded across 2 famil(y/ies)

31 font weights loaded -- likely 100+ KB of unused payload

Loading 31 font weights typically transfers 200-400 KB just for fonts. Most pages legitimately use 2-3 weights (regular + bold, maybe medium). Audit which weights your stylesheet actually applies and trim the Google Fonts URL accordingly. Affected families: Open Sans, Poppins.

CO2 Per Page Load

0.35g CO2 per view

PASS

0.35g CO2 per view

0.35g CO2 per page view

This page transfers 1.5 MB, producing an estimated 0.35g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.07g, end-user device 0.27g.

Got: 0.35g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 41.6 kg CO2/year

With 10,000 page views per month, this page would generate approximately 41.6 kg of CO2 annually — equivalent to charging 5204 smartphones.

Green hosting reduces data center emissions

0.35g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 76% of websites

Sustainable Web Design model v4 · Page size: 1.5 MB

Your site

0.35g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.01g

Network

0.07g

End-user device

0.27g

At 10,000 monthly views: Monthly: 3.5 kg · Annual: 41.6 kg · ≈ 5204 smartphone charges

A+

Repeat Visit Weight

98% cached

PASS

98% cached

98% reduction on repeat visits

Returning visitors download only 36 KB (vs 1501 KB first visit). 63 of 64 resources are served from browser cache, saving 0.34g CO2 per repeat visit.

Repeat visit: 0.01g CO2 (first visit: 0.35g)

First visit

1501 KB

Repeat visit

36 KB

98% reduction on repeat visits

Saving 0.34g CO2 per returning visitor

63 resources served from cache · 1 resources re-downloaded

Carbon Budget

24th percentile

PASS

24th percentile

0.35g CO2 — below the sustainability target of 0.50g

Cleaner than an estimated 76% of websites analyzed. This page meets the Web Sustainability Guidelines target.

Estimated 24th percentile

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

Top 10%

Target

Median website

0.35g

24th percentile

Cleaner than 76% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 42% cleaner ✓

vs Target 31% cleaner ✓

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Netsons s.r.l.

Image Optimization

73 images, 149 KB total, 61 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

149 KB

Oversized

Wasted

61 KB

8 missing dimensions

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