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 LoadAction1.67g CO2 per viewFIX
CO2 Per Page Load
Action1.67g CO2 per view
1.67g CO2 per view
Warning::
1.67g CO2 per page view
This page transfers 7.1 MB, producing an estimated 1.67g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.35g, end-user device 1.28g.
Got: 1.67g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 200.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 200.7 kg of CO2 annually — equivalent to charging 25082 smartphones.
Info::
Green hosting reduces data center emissions
1.67g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 20% of websites
Sustainable Web Design model v4 · Page size: 7.1 MB
Your site
1.67g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.04g
Network
0.35g
End-user device
1.28g
At 10,000 monthly views: Monthly: 16.7 kg · Annual: 200.7 kg · ≈ 25082 smartphone charges
FCarbon BudgetAction80th percentileFIX
Carbon Budget
Action80th percentile
80th percentile
Warning::
1.67g CO2 — above the median website (0.60g)
Heavier than an estimated 20% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 80th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.67g
80th percentile
Cleaner than 20% of websites
✗ Above the median website
vs Median 179% more
vs Target 234% more
BTransfer Efficiency81% efficientREVIEW
Transfer Efficiency
81% efficient
81% efficient
Info::
Transfer efficiency: 81%
An estimated 1371 KB (19%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1371 KB of unused JavaScript. This wasted data produces 0.32g of unnecessary CO2 per page view.
Total waste: 1371 KB (19% of page weight)
Unused JS 1371 KB
0.32g unnecessary CO2 per visit
Actual transfer 7234 KB
Theoretical minimum 5863 KB
Potential savings 1371 KB (0.32g 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 7234 KB first visit). 657 of 669 resources are served from browser cache, saving 1.61g CO2 per repeat visit.
Info::
Repeat visit: 0.07g CO2 (first visit: 1.67g)
First visit
7234 KB
Repeat visit
284 KB
96% reduction on repeat visits
Saving 1.61g CO2 per returning visitor
657 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.