https://www.thousandsmiles.co.uk/teeth-whitening

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 3 REVIEW 1 FIX

Carbon Budget

Action

53th percentile

FIX

53th percentile

0.73g CO2 — above the median website (0.60g)

Heavier than an estimated 47% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.

Estimated 53th percentile

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

Top 10%

Target

Median website

0.73g

53rd percentile

Cleaner than 47% of websites

✗ Above the median website

vs Median 22% more

vs Target 46% more

CO2 Per Page Load

0.73g CO2 per view

REVIEW

0.73g CO2 per view

0.73g CO2 per page view

This page transfers 3.1 MB, producing an estimated 0.73g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.15g, end-user device 0.56g.

Got: 0.73g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 87.8 kg CO2/year

With 10,000 page views per month, this page would generate approximately 87.8 kg of CO2 annually — equivalent to charging 10972 smartphones.

Green hosting reduces data center emissions

0.73g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 47% of websites

Sustainable Web Design model v4 · Page size: 3.1 MB

Your site

0.73g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.02g

Network

0.15g

End-user device

0.56g

At 10,000 monthly views: Monthly: 7.3 kg · Annual: 87.8 kg · ≈ 10972 smartphone charges

Green Hosting

Green (hosting)

REVIEW

Green (hosting)

Amazon Web Services uses renewable energy

Amazon Web Services: 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 Amazon Web Services✓CDN Not identified✗

Amazon Web Services: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

Transfer Efficiency

83% efficient

REVIEW

83% efficient

Transfer efficiency: 83%

An estimated 551 KB (17%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 551 KB of unused JavaScript. This wasted data produces 0.13g of unnecessary CO2 per page view.

Total waste: 551 KB (17% of page weight)

Unused JS 551 KB

0.13g unnecessary CO2 per visit

Actual transfer 3164 KB

Theoretical minimum 2613 KB

Potential savings 551 KB (0.13g CO2)

See Deep Analysis sections above for specific optimizations.

A+

Repeat Visit Weight

99% cached

PASS

99% cached

99% reduction on repeat visits

Returning visitors download only 38 KB (vs 3164 KB first visit). 70 of 72 resources are served from browser cache, saving 0.72g CO2 per repeat visit.

Repeat visit: 0.01g CO2 (first visit: 0.73g)

First visit

3164 KB

Repeat visit

38 KB

99% reduction on repeat visits

Saving 0.72g CO2 per returning visitor

70 resources served from cache · 2 resources re-downloaded

A+

Web Font Weight Variants

1 font weights loaded across 1 famil(y/ies) -- reasonable

PASS

1 font weights loaded across 1 famil(y/ies) -- reasonable

1 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: Hetzner Online GmbH

Image Optimization

34 images, 1829 KB total, 0 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

1829 KB

34 missing dimensions 24 missing lazy loading

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