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)

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

Transfer Efficiency

86% efficient

REVIEW

86% efficient

Transfer efficiency: 86%

An estimated 218 KB (14%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 218 KB of unused JavaScript. This wasted data produces 0.05g of unnecessary CO2 per page view.

Total waste: 218 KB (14% of page weight)

Unused JS 218 KB

0.05g unnecessary CO2 per visit

Actual transfer 1549 KB

Theoretical minimum 1331 KB

Potential savings 218 KB (0.05g CO2)

See Deep Analysis sections above for specific optimizations.

Web Font Weight Variants

Action

38 font weights loaded across 3 famil(y/ies)

REVIEW

38 font weights loaded across 3 famil(y/ies)

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

Loading 38 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: Inter, Roboto, Roboto Slab.

CO2 Per Page Load

0.36g CO2 per view

PASS

0.36g CO2 per view

0.36g CO2 per page view

This page transfers 1.5 MB, producing an estimated 0.36g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.07g, end-user device 0.28g.

Got: 0.36g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 43.0 kg CO2/year

With 10,000 page views per month, this page would generate approximately 43.0 kg of CO2 annually — equivalent to charging 5373 smartphones.

Green hosting reduces data center emissions

0.36g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 75% of websites

Sustainable Web Design model v4 · Page size: 1.5 MB

Your site

0.36g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.01g

Network

0.07g

End-user device

0.28g

At 10,000 monthly views: Monthly: 3.6 kg · Annual: 43.0 kg · ≈ 5373 smartphone charges

A+

Repeat Visit Weight

95% cached

PASS

95% cached

95% reduction on repeat visits

Returning visitors download only 72 KB (vs 1549 KB first visit). 74 of 79 resources are served from browser cache, saving 0.34g CO2 per repeat visit.

Repeat visit: 0.02g CO2 (first visit: 0.36g)

First visit

1549 KB

Repeat visit

72 KB

95% reduction on repeat visits

Saving 0.34g CO2 per returning visitor

74 resources served from cache · 5 resources re-downloaded

Carbon Budget

25th percentile

PASS

25th percentile

0.36g CO2 — below the sustainability target of 0.50g

Cleaner than an estimated 75% of websites analyzed. This page meets the Web Sustainability Guidelines target.

Estimated 25th percentile

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

Top 10%

Target

Median website

0.36g

25th percentile

Cleaner than 75% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 40% cleaner ✓

vs Target 28% 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: Hostinger

Image Optimization

17 images, 380 KB total, 219 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

380 KB

Oversized

Wasted

219 KB

4 missing lazy loading

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