https://www.doodlepainting.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
82
GRADE
B
FIX
1
REVIEW
4
PASS
2
INFO
1
Checks
82 PASS 4 REVIEW 1 FIX
DCarbon BudgetAction53th percentileFIX
Carbon Budget
Action53th percentile
53th percentile
Warning::
0.71g CO2 — above the median website (0.60g)
Heavier than an estimated 47% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 53th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.71g
53rd percentile
Cleaner than 47% of websites
✗ Above the median website
vs Median 18% more
vs Target 42% more
BCO2 Per Page Load0.71g CO2 per viewREVIEW
CO2 Per Page Load
0.71g CO2 per view
0.71g CO2 per view
Info::
0.71g CO2 per page view
This page transfers 3.0 MB, producing an estimated 0.71g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.15g, end-user device 0.54g.
Got: 0.71g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 85.1 kg CO2/year
With 10,000 page views per month, this page would generate approximately 85.1 kg of CO2 annually — equivalent to charging 10642 smartphones.
Info::
Green hosting reduces data center emissions
0.71g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 47% of websites
Sustainable Web Design model v4 · Page size: 3.0 MB
Your site
0.71g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.15g
End-user device
0.54g
At 10,000 monthly views: Monthly: 7.1 kg · Annual: 85.1 kg · ≈ 10642 smartphone charges
BTransfer Efficiency84% efficientREVIEW
Transfer Efficiency
84% efficient
84% efficient
Info::
Transfer efficiency: 84%
An estimated 502 KB (16%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 502 KB of unused JavaScript. This wasted data produces 0.12g of unnecessary CO2 per page view.
Total waste: 502 KB (16% of page weight)
Unused JS 502 KB
0.12g unnecessary CO2 per visit
Actual transfer 3069 KB
Theoretical minimum 2566 KB
Potential savings 502 KB (0.12g 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 Snowplow Analytics✗CDN Cloudflare✓
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 28 KB (vs 3069 KB first visit). 85 of 87 resources are served from browser cache, saving 0.70g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.71g)
First visit
3069 KB
Repeat visit
28 KB
99% reduction on repeat visits
Saving 0.70g CO2 per returning visitor
85 resources served from cache · 2 resources re-downloaded
Image Optimization9 images, 125 KB total, 0 KB wastedINFO
Image Optimization
9 images, 125 KB total, 0 KB wasted
Image Optimization Audit
Total Images
9
Total Size
125 KB
9 missing dimensions 6 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.