https://dr.dk
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
60
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
FCO2 Per Page LoadAction4.70g CO2 per viewFIX
CO2 Per Page Load
Action4.70g CO2 per view
4.70g CO2 per view
Critical::
4.70g CO2 per page view
This page transfers 16.6 MB, producing an estimated 4.70g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.87g, network 0.81g, end-user device 3.02g.
Got: 4.70g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 563.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 563.7 kg of CO2 annually — equivalent to charging 70457 smartphones.
4.70g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 16.6 MB
Your site
4.70g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.87g
Network
0.81g
End-user device
3.02g
At 10,000 monthly views: Monthly: 47.0 kg · Annual: 563.7 kg · ≈ 70457 smartphone charges
DGreen HostingActionNot greenFIX
Green Hosting
ActionNot green
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
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 HostingNot Green Hosted
Hosting Next.js✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
4.70g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
4.70g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 683% more
vs Target 839% 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
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 116 KB (vs 16984 KB first visit). 179 of 186 resources are served from browser cache, saving 4.67g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 4.70g)
First visit
16984 KB
Repeat visit
116 KB
99% reduction on repeat visits
Saving 4.67g CO2 per returning visitor
179 resources served from cache · 7 resources re-downloaded
A+Transfer Efficiency97% efficientPASS
Transfer Efficiency
97% efficient
97% efficient
Info::
Transfer efficiency: 97%
Only 554 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 554 KB (3% of page weight)
Unused JS 554 KB
0.15g unnecessary CO2 per visit
Actual transfer 16984 KB
Theoretical minimum 16429 KB
Potential savings 554 KB (0.15g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization105 images, 1 KB total, 0 KB wastedINFO
Image Optimization
105 images, 1 KB total, 0 KB wasted
Image Optimization Audit
Total Images
105
Total Size
1 KB
1 missing dimensions 17 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.