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

3 PASS 4 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

Carbon Budget

34th percentile

REVIEW

34th percentile

0.45g CO2 — below the sustainability target of 0.50g

Cleaner than an estimated 66% of websites analyzed. This page meets the Web Sustainability Guidelines target.

Estimated 34th percentile

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

Top 10%

Target

Median website

0.45g

34th percentile

Cleaner than 66% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 25% cleaner ✓

vs Target 11% cleaner ✓

Transfer Efficiency

Action

74% efficient

REVIEW

74% efficient

Transfer efficiency: 74%

An estimated 495 KB (26%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 495 KB of unused JavaScript. This wasted data produces 0.11g of unnecessary CO2 per page view.

Total waste: 495 KB (26% of page weight)

Unused JS 495 KB

0.11g unnecessary CO2 per visit

Actual transfer 1935 KB

Theoretical minimum 1439 KB

Potential savings 495 KB (0.11g CO2)

See Deep Analysis sections above for specific optimizations.

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

0.45g CO2 per view

PASS

0.45g CO2 per view

0.45g CO2 per page view

This page transfers 1.9 MB, producing an estimated 0.45g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.09g, end-user device 0.34g.

Got: 0.45g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 53.7 kg CO2/year

With 10,000 page views per month, this page would generate approximately 53.7 kg of CO2 annually — equivalent to charging 6708 smartphones.

Green hosting reduces data center emissions

0.45g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 66% of websites

Sustainable Web Design model v4 · Page size: 1.9 MB

Your site

0.45g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.01g

Network

0.09g

End-user device

0.34g

At 10,000 monthly views: Monthly: 4.5 kg · Annual: 53.7 kg · ≈ 6708 smartphone charges

A+

Repeat Visit Weight

80% cached

PASS

80% cached

80% reduction on repeat visits

Returning visitors download only 383 KB (vs 1935 KB first visit). 212 of 214 resources are served from browser cache, saving 0.36g CO2 per repeat visit.

Repeat visit: 0.09g CO2 (first visit: 0.45g)

First visit

1935 KB

Repeat visit

383 KB

80% reduction on repeat visits

Saving 0.36g CO2 per returning visitor

212 resources served from cache · 2 resources re-downloaded

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

19 images, 7 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

7 KB

14 missing lazy loading

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