https://vipcarpetcleaninglondon.co.uk
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
79
GRADE
C
FIX
0
REVIEW
5
PASS
2
INFO
1
Checks
82 PASS 5 REVIEW
BCO2 Per Page Load0.61g CO2 per viewREVIEW
CO2 Per Page Load
0.61g CO2 per view
0.61g CO2 per view
Info::
0.61g CO2 per page view
This page transfers 2.6 MB, producing an estimated 0.61g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.13g, end-user device 0.47g.
Got: 0.61g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 73.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 73.5 kg of CO2 annually — equivalent to charging 9186 smartphones.
Info::
Green hosting reduces data center emissions
0.61g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 50% of websites
Sustainable Web Design model v4 · Page size: 2.6 MB
Your site
0.61g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.13g
End-user device
0.47g
At 10,000 monthly views: Monthly: 6.1 kg · Annual: 73.5 kg · ≈ 9186 smartphone charges
BCarbon Budget50th percentileREVIEW
Carbon Budget
50th percentile
50th percentile
Warning::
0.61g CO2 — above the median website (0.60g)
Heavier than an estimated 50% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 50th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.61g
50th percentile
Cleaner than 50% of websites
✗ Above the median website
vs Median 2% more
vs Target 22% more
CTransfer EfficiencyAction65% efficientREVIEW
Transfer Efficiency
Action65% efficient
65% efficient
Warning::
Transfer efficiency: 65%
An estimated 922 KB (35%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 922 KB of unused JavaScript. This wasted data produces 0.21g of unnecessary CO2 per page view.
Total waste: 922 KB (35% of page weight)
Unused JS 922 KB
0.21g unnecessary CO2 per visit
Actual transfer 2649 KB
Theoretical minimum 1726 KB
Potential savings 922 KB (0.21g 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 Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 57 KB (vs 2649 KB first visit). 124 of 127 resources are served from browser cache, saving 0.60g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.61g)
First visit
2649 KB
Repeat visit
57 KB
98% reduction on repeat visits
Saving 0.60g CO2 per returning visitor
124 resources served from cache · 3 resources re-downloaded
Image Optimization47 images, 246 KB total, 108 KB wastedINFO
Image Optimization
47 images, 246 KB total, 108 KB wasted
Image Optimization Audit
Total Images
47
Total Size
246 KB
Oversized
1
Wasted
108 KB
47 missing dimensions 39 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.