https://aryanworldwide.github.io/Robocraft

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

4 PASS 3 REVIEW

Transfer Efficiency

Action

72% efficient

REVIEW

72% efficient

Transfer efficiency: 72%

An estimated 158 KB (28%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 158 KB of unused JavaScript. This wasted data produces 0.04g of unnecessary CO2 per page view.

Total waste: 158 KB (28% of page weight)

Unused JS 158 KB

0.04g unnecessary CO2 per visit

Actual transfer 565 KB

Theoretical minimum 406 KB

Potential savings 158 KB (0.04g 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.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

A+

CO2 Per Page Load

0.13g CO2 per view

PASS

0.13g CO2 per view

0.13g CO2 per page view

This page transfers 0.6 MB, producing an estimated 0.13g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.00g, network 0.03g, end-user device 0.10g.

Got: 0.13g CO2 Expected: < 0.50g (sustainability target)

At 10,000 monthly views: 15.7 kg CO2/year

With 10,000 page views per month, this page would generate approximately 15.7 kg of CO2 annually — equivalent to charging 1960 smartphones.

Green hosting reduces data center emissions

0.13g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 90% of websites

Sustainable Web Design model v4 · Page size: 0.6 MB

Your site

0.13g

Top 10%

0.20g

Target

0.50g

Median website

0.60g

Energy Breakdown

Data center

0.00g

Network

0.03g

End-user device

0.10g

At 10,000 monthly views: Monthly: 1.3 kg · Annual: 15.7 kg · ≈ 1960 smartphone charges

A+

Green Hosting

Green (both)

PASS

Green (both)

Both hosting and CDN use renewable energy

Got: Hosting: GitHub Pages, CDN: GitHub Pages

GitHub Pages: Hosted on Azure/GitHub with Microsoft carbon-negative commitment

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 GitHub Pages✓CDN GitHub Pages✓

GitHub Pages: Hosted on Azure/GitHub with Microsoft carbon-negative commitment

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 565 KB first visit). 12 of 13 resources are served from browser cache, saving 0.13g CO2 per repeat visit.

Repeat visit: 0.00g CO2 (first visit: 0.13g)

First visit

565 KB

Repeat visit

0 KB

100% reduction on repeat visits

Saving 0.13g CO2 per returning visitor

12 resources served from cache · 1 resources re-downloaded

A+

Carbon Budget

10th percentile

PASS

10th percentile

0.13g CO2 — below the sustainability target of 0.50g

Cleaner than an estimated 90% of websites analyzed. This page meets the Web Sustainability Guidelines target.

Estimated 10th percentile

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

Top 10%

Target

Median website

0.13g

10th percentile

Cleaner than 90% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 78% cleaner ✓

vs Target 74% cleaner ✓

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