https://dotique.co.uk
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
75
GRADE
C
FIX
2
REVIEW
1
PASS
4
INFO
1
Checks
84 PASS 1 REVIEW 2 FIX
FCO2 Per Page LoadAction1.97g CO2 per viewFIX
CO2 Per Page Load
Action1.97g CO2 per view
1.97g CO2 per view
Warning::
1.97g CO2 per page view
This page transfers 8.3 MB, producing an estimated 1.97g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.05g, network 0.41g, end-user device 1.51g.
Got: 1.97g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 236.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 236.7 kg of CO2 annually — equivalent to charging 29582 smartphones.
Info::
Green hosting reduces data center emissions
1.97g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 11% of websites
Sustainable Web Design model v4 · Page size: 8.3 MB
Your site
1.97g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.05g
Network
0.41g
End-user device
1.51g
At 10,000 monthly views: Monthly: 19.7 kg · Annual: 236.7 kg · ≈ 29582 smartphone charges
FCarbon BudgetAction89th percentileFIX
Carbon Budget
Action89th percentile
89th percentile
Warning::
1.97g CO2 — above the median website (0.60g)
Heavier than an estimated 11% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 89th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.97g
89th percentile
Cleaner than 11% of websites
✗ Above the median website
vs Median 229% more
vs Target 294% more
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.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Snowplow Analytics, CDN: Cloudflare
Info::
Snowplow Analytics: 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 Snowplow Analytics✓CDN Cloudflare✓
Snowplow Analytics: 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 Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 153 KB (vs 8532 KB first visit). 890 of 892 resources are served from browser cache, saving 1.94g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 1.97g)
First visit
8532 KB
Repeat visit
153 KB
98% reduction on repeat visits
Saving 1.94g CO2 per returning visitor
890 resources served from cache · 2 resources re-downloaded
A+Transfer Efficiency95% efficientPASS
Transfer Efficiency
95% efficient
95% efficient
Info::
Transfer efficiency: 95%
Only 453 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 453 KB (5% of page weight)
Unused JS 453 KB
0.10g unnecessary CO2 per visit
Actual transfer 8532 KB
Theoretical minimum 8079 KB
Potential savings 453 KB (0.10g CO2)
See Deep Analysis sections above for specific optimizations.
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 Optimization200 images, 2941 KB total, 871 KB wastedINFO
Image Optimization
200 images, 2941 KB total, 871 KB wasted
Image Optimization Audit
Total Images
200
Total Size
2941 KB
Oversized
20
Wasted
871 KB
55 missing dimensions 92 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.