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 REVIEW

Green Hosting

Green (hosting)

REVIEW

Green (hosting)

Hostinger uses renewable energy

Hostinger: 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 Hostinger✓CDN Not identified✗

Hostinger: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

Web Font Weight Variants

No detectable Google Fonts weights

REVIEW

No detectable Google Fonts weights

The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.

CO2 Per Page Load

0.23g CO2 per view

PASS

0.23g CO2 per view

0.23g CO2 per page view

This page transfers 1.0 MB, producing an estimated 0.23g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.05g, end-user device 0.17g.

Got: 0.23g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 27.2 kg CO2/year

With 10,000 page views per month, this page would generate approximately 27.2 kg of CO2 annually — equivalent to charging 3393 smartphones.

Green hosting reduces data center emissions

0.23g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 88% of websites

Sustainable Web Design model v4 · Page size: 1.0 MB

Your site

0.23g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.01g

Network

0.05g

End-user device

0.17g

At 10,000 monthly views: Monthly: 2.3 kg · Annual: 27.2 kg · ≈ 3393 smartphone charges

A+

Repeat Visit Weight

81% cached

PASS

81% cached

81% reduction on repeat visits

Returning visitors download only 186 KB (vs 978 KB first visit). 55 of 56 resources are served from browser cache, saving 0.18g CO2 per repeat visit.

Repeat visit: 0.04g CO2 (first visit: 0.23g)

First visit

978 KB

Repeat visit

186 KB

81% reduction on repeat visits

Saving 0.18g CO2 per returning visitor

55 resources served from cache · 1 resources re-downloaded

Carbon Budget

12th percentile

PASS

12th percentile

0.23g CO2 — below the sustainability target of 0.50g

Cleaner than an estimated 88% of websites analyzed. This page meets the Web Sustainability Guidelines target.

Estimated 12th percentile

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

Top 10%

Target

Median website

0.23g

12th percentile

Cleaner than 88% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 62% cleaner ✓

vs Target 55% cleaner ✓

A+

Transfer Efficiency

100% efficient

PASS

100% efficient

Transfer efficiency: 100%

Only 0 KB of potential savings identified. Your page is well-optimized for size.

Actual transfer 978 KB

Theoretical minimum 978 KB

See Deep Analysis sections above for specific optimizations.

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Hostinger

Image Optimization

154 images, 95 KB total, 91 KB wasted

INFO

Image Optimization Audit

Total Images

154

Total Size

95 KB

Oversized

Wasted

91 KB

116 missing dimensions 115 missing lazy loading

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