https://hornbach.de
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
78
GRADE
C
FIX
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
DCO2 Per Page LoadAction1.05g CO2 per viewFIX
CO2 Per Page Load
Action1.05g CO2 per view
1.05g CO2 per view
Warning::
1.05g CO2 per page view
This page transfers 4.4 MB, producing an estimated 1.05g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.22g, end-user device 0.80g.
Got: 1.05g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 125.6 kg CO2/year
With 10,000 page views per month, this page would generate approximately 125.6 kg of CO2 annually — equivalent to charging 15705 smartphones.
Info::
Green hosting reduces data center emissions
1.05g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 38% of websites
Sustainable Web Design model v4 · Page size: 4.4 MB
Your site
1.05g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.03g
Network
0.22g
End-user device
0.80g
At 10,000 monthly views: Monthly: 10.5 kg · Annual: 125.6 kg · ≈ 15705 smartphone charges
DCarbon BudgetAction62th percentileFIX
Carbon Budget
Action62th percentile
62th percentile
Warning::
1.05g CO2 — above the median website (0.60g)
Heavier than an estimated 38% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 62th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.05g
62nd percentile
Cleaner than 38% of websites
✗ Above the median website
vs Median 75% more
vs Target 109% more
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
Axis12 Ltd uses renewable energy
Info::
Axis12 Ltd: Verified by the Green Web Foundation
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 Axis12 Ltd✓CDN Not identified✗
Axis12 Ltd: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
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+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 116 KB (vs 4529 KB first visit). 122 of 124 resources are served from browser cache, saving 1.02g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 1.05g)
First visit
4529 KB
Repeat visit
116 KB
97% reduction on repeat visits
Saving 1.02g CO2 per returning visitor
122 resources served from cache · 2 resources re-downloaded
A+Transfer Efficiency94% efficientPASS
Transfer Efficiency
94% efficient
94% efficient
Info::
Transfer efficiency: 94%
Only 271 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 271 KB (6% of page weight)
Unused JS 271 KB
0.06g unnecessary CO2 per visit
Actual transfer 4529 KB
Theoretical minimum 4258 KB
Potential savings 271 KB (0.06g 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: Axis12 Ltd
Image Optimization37 images, 0 KB total, 0 KB wastedINFO
Image Optimization
37 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
37
Total Size
0 KB
Oversized
1
10 missing dimensions 2 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.