https://vipcarpetcleaninglondon.co.uk/sofa-cleaning/
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
84
GRADE
B
FIX
0
REVIEW
3
PASS
4
INFO
1
Checks
84 PASS 3 REVIEW
BCarbon Budget36th percentileREVIEW
Carbon Budget
36th percentile
36th percentile
Info::
0.47g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 64% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 36th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.47g
36th percentile
Cleaner than 64% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 22% cleaner ✓
vs Target 6% cleaner ✓
CTransfer EfficiencyAction65% efficientREVIEW
Transfer Efficiency
Action65% efficient
65% efficient
Warning::
Transfer efficiency: 65%
An estimated 715 KB (35%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 715 KB of unused JavaScript. This wasted data produces 0.17g of unnecessary CO2 per page view.
Total waste: 715 KB (35% of page weight)
Unused JS 715 KB
0.17g unnecessary CO2 per visit
Actual transfer 2025 KB
Theoretical minimum 1310 KB
Potential savings 715 KB (0.17g 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.
ACO2 Per Page Load0.47g CO2 per viewPASS
CO2 Per Page Load
0.47g CO2 per view
0.47g CO2 per view
Info::
0.47g CO2 per page view
This page transfers 2.0 MB, producing an estimated 0.47g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.10g, end-user device 0.36g.
Got: 0.47g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 56.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 56.2 kg of CO2 annually — equivalent to charging 7022 smartphones.
Info::
Green hosting reduces data center emissions
0.47g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 64% of websites
Sustainable Web Design model v4 · Page size: 2.0 MB
Your site
0.47g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.10g
End-user device
0.36g
At 10,000 monthly views: Monthly: 4.7 kg · Annual: 56.2 kg · ≈ 7022 smartphone charges
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Cloudflare, CDN: Cloudflare
Info::
Cloudflare: Verified by the Green Web Foundation
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 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 Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 52 KB (vs 2025 KB first visit). 87 of 90 resources are served from browser cache, saving 0.46g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.47g)
First visit
2025 KB
Repeat visit
52 KB
97% reduction on repeat visits
Saving 0.46g CO2 per returning visitor
87 resources served from cache · 3 resources re-downloaded
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Image Optimization14 images, 159 KB total, 44 KB wastedINFO
Image Optimization
14 images, 159 KB total, 44 KB wasted
Image Optimization Audit
Total Images
14
Total Size
159 KB
Oversized
1
Wasted
44 KB
14 missing dimensions 12 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.