Skip to content
https://muenchen.de

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
81
GRADE
B
FIX
2
REVIEW
1
PASS
3
INFO
0
Device:
Mobile Desktop
Checks
6
3 PASS 1 REVIEW 2 FIX
D
CO2 Per Page Load
Action
1.28g CO2 per view
FIX
1.28g CO2 per view
Warning::
1.28g CO2 per page view
This page transfers 5.4 MB, producing an estimated 1.28g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.26g, end-user device 0.98g.
Got: 1.28g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 153.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 153.2 kg of CO2 annually — equivalent to charging 19153 smartphones.
Info::
Green hosting reduces data center emissions

1.28g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 31% of websites

Sustainable Web Design model v4 · Page size: 5.4 MB

Your site
1.28g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.03g
Network
0.26g
End-user device
0.98g
At 10,000 monthly views: Monthly: 12.8 kg · Annual: 153.2 kg · ≈ 19153 smartphone charges
D
Carbon Budget
Action
69th percentile
FIX
69th percentile
Warning::
1.28g CO2 — above the median website (0.60g)
Heavier than an estimated 31% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 69th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.28g

69th percentile

Cleaner than 31% of websites

✗ Above the median website

vs Median 113% more
vs Target 155% more
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A
Green Hosting
Green (cdn)
PASS
Green (cdn)
Info::
Fastly CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
Info::
Fastly: 100% renewable energy for edge network
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 Platform.sh✗CDN Fastly✓

Fastly: 100% renewable energy for edge network

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+
Repeat Visit Weight
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 57 KB (vs 5524 KB first visit). 108 of 113 resources are served from browser cache, saving 1.26g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 1.28g)
First visit
5524 KB
Repeat visit
57 KB

99% reduction on repeat visits

Saving 1.26g CO2 per returning visitor

108 resources served from cache · 5 resources re-downloaded

A+
Transfer Efficiency
97% efficient
PASS
97% efficient
Info::
Transfer efficiency: 97%
Only 151 KB of potential savings identified. Your page is well-optimized for size.
97% efficient

Total waste: 151 KB (3% of page weight)

Unused JS 151 KB

0.03g unnecessary CO2 per visit

Actual transfer 5524 KB
Theoretical minimum 5373 KB
Potential savings 151 KB (0.03g CO2)

See Deep Analysis sections above for specific optimizations.

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback