Sustainability

· 7 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

6 PASS 1 REVIEW

Web Font Weight Variants

Action

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

REVIEW

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

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

Loading 10 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: Cairo, Tajawal.

CO2 Per Page Load

0.24g CO2 per view

PASS

0.24g CO2 per view

0.24g CO2 per page view

This page transfers 1.0 MB, producing an estimated 0.24g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.05g, end-user device 0.19g.

Got: 0.24g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 29.1 kg CO2/year

With 10,000 page views per month, this page would generate approximately 29.1 kg of CO2 annually — equivalent to charging 3639 smartphones.

Green hosting reduces data center emissions

0.24g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 86% of websites

Sustainable Web Design model v4 · Page size: 1.0 MB

Your site

0.24g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.01g

Network

0.05g

End-user device

0.19g

At 10,000 monthly views: Monthly: 2.4 kg · Annual: 29.1 kg · ≈ 3639 smartphone charges

A+

Green Hosting

Green (both)

PASS

Green (both)

Both hosting and CDN use renewable energy

Got: Hosting: Cloudflare, CDN: Cloudflare

Cloudflare: Verified by the Green Web Foundation

Cloudflare: 100% renewable energy for global network since 2019

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 Cloudflare✓CDN Cloudflare✓

Cloudflare: Verified by the Green Web Foundation

Cloudflare: 100% renewable energy for global network since 2019

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+

Repeat Visit Weight

100% cached

PASS

100% cached

100% reduction on repeat visits

Returning visitors download only 0 KB (vs 1049 KB first visit). 34 of 35 resources are served from browser cache, saving 0.24g CO2 per repeat visit.

Repeat visit: 0.00g CO2 (first visit: 0.24g)

First visit

1049 KB

Repeat visit

0 KB

100% reduction on repeat visits

Saving 0.24g CO2 per returning visitor

34 resources served from cache · 1 resources re-downloaded

Carbon Budget

14th percentile

PASS

14th percentile

0.24g CO2 — below the sustainability target of 0.50g

Cleaner than an estimated 86% of websites analyzed. This page meets the Web Sustainability Guidelines target.

Estimated 14th percentile

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

Top 10%

Target

Median website

0.24g

14th percentile

Cleaner than 86% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 60% cleaner ✓

vs Target 51% cleaner ✓

A+

Transfer Efficiency

97% efficient

PASS

97% efficient

Transfer efficiency: 97%

Only 32 KB of potential savings identified. Your page is well-optimized for size.

Total waste: 32 KB (3% of page weight)

Unused JS 32 KB

0.01g unnecessary CO2 per visit

Actual transfer 1049 KB

Theoretical minimum 1016 KB

Potential savings 32 KB (0.01g CO2)

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: Cloudflare

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