https://hatland.eu
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
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
DCO2 Per Page LoadAction0.98g CO2 per viewFIX
CO2 Per Page Load
Action0.98g CO2 per view
0.98g CO2 per view
Info::
0.98g CO2 per page view
This page transfers 4.1 MB, producing an estimated 0.98g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.20g, end-user device 0.75g.
Got: 0.98g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 117.6 kg CO2/year
With 10,000 page views per month, this page would generate approximately 117.6 kg of CO2 annually — equivalent to charging 14704 smartphones.
Info::
Green hosting reduces data center emissions
0.98g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 40% of websites
Sustainable Web Design model v4 · Page size: 4.1 MB
Your site
0.98g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.20g
End-user device
0.75g
At 10,000 monthly views: Monthly: 9.8 kg · Annual: 117.6 kg · ≈ 14704 smartphone charges
DCarbon BudgetAction60th percentileFIX
Carbon Budget
Action60th percentile
60th percentile
Warning::
0.98g CO2 — above the median website (0.60g)
Heavier than an estimated 40% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 60th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.98g
60th percentile
Cleaner than 40% of websites
✗ Above the median website
vs Median 63% more
vs Target 96% 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.
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 64 KB (vs 4241 KB first visit). 310 of 316 resources are served from browser cache, saving 0.97g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.98g)
First visit
4241 KB
Repeat visit
64 KB
98% reduction on repeat visits
Saving 0.97g CO2 per returning visitor
310 resources served from cache · 6 resources re-downloaded
A+Transfer Efficiency90% efficientPASS
Transfer Efficiency
90% efficient
90% efficient
Info::
Transfer efficiency: 90%
Only 412 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 412 KB (10% of page weight)
Unused JS 412 KB
0.10g unnecessary CO2 per visit
Actual transfer 4241 KB
Theoretical minimum 3828 KB
Potential savings 412 KB (0.10g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization84 images, 2225 KB total, 506 KB wastedINFO
Image Optimization
84 images, 2225 KB total, 506 KB wasted
Image Optimization Audit
Total Images
84
Total Size
2225 KB
Oversized
14
Wasted
506 KB
1 missing alt text 14 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.