https://raptonline.co.nz
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
69
GRADE
D
FIX
2
REVIEW
3
PASS
2
INFO
1
Checks
82 PASS 3 REVIEW 2 FIX
FCO2 Per Page LoadAction1.74g CO2 per viewFIX
CO2 Per Page Load
Action1.74g CO2 per view
1.74g CO2 per view
Warning::
1.74g CO2 per page view
This page transfers 7.4 MB, producing an estimated 1.74g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.36g, end-user device 1.34g.
Got: 1.74g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 209.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 209.1 kg of CO2 annually — equivalent to charging 26138 smartphones.
Info::
Green hosting reduces data center emissions
1.74g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 18% of websites
Sustainable Web Design model v4 · Page size: 7.4 MB
Your site
1.74g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.04g
Network
0.36g
End-user device
1.34g
At 10,000 monthly views: Monthly: 17.4 kg · Annual: 209.1 kg · ≈ 26138 smartphone charges
FCarbon BudgetAction82th percentileFIX
Carbon Budget
Action82th percentile
82th percentile
Warning::
1.74g CO2 — above the median website (0.60g)
Heavier than an estimated 18% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 82th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.74g
82nd percentile
Cleaner than 18% of websites
✗ Above the median website
vs Median 190% more
vs Target 249% more
BTransfer Efficiency82% efficientREVIEW
Transfer Efficiency
82% efficient
82% efficient
Info::
Transfer efficiency: 82%
An estimated 1359 KB (18%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1359 KB of unused JavaScript. This wasted data produces 0.31g of unnecessary CO2 per page view.
Total waste: 1359 KB (18% of page weight)
Unused JS 1359 KB
0.31g unnecessary CO2 per visit
Actual transfer 7539 KB
Theoretical minimum 6179 KB
Potential savings 1359 KB (0.31g CO2)
See Deep Analysis sections above for specific optimizations.
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
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.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
AGreen HostingGreen (cdn)PASS
Green Hosting
Green (cdn)
Green (cdn)
Info::
Cloudflare CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
Info::
Cloudflare: 100% renewable energy for global network since 2019
Info::
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 Not identified✗CDN Cloudflare✓
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight96% cachedPASS
Repeat Visit Weight
96% cached
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 284 KB (vs 7539 KB first visit). 653 of 665 resources are served from browser cache, saving 1.68g CO2 per repeat visit.
Info::
Repeat visit: 0.07g CO2 (first visit: 1.74g)
First visit
7539 KB
Repeat visit
284 KB
96% reduction on repeat visits
Saving 1.68g CO2 per returning visitor
653 resources served from cache · 12 resources re-downloaded
Image Optimization189 images, 1015 KB total, 238 KB wastedINFO
Image Optimization
189 images, 1015 KB total, 238 KB wasted
Image Optimization Audit
Total Images
189
Total Size
1015 KB
Oversized
8
Wasted
238 KB
3 missing dimensions 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.