Skip to content
https://kde.org

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
62
GRADE
D
FIX
2
REVIEW
1
PASS
3
INFO
0
Device:
Mobile Desktop
Checks
6
3 PASS 1 REVIEW 2 FIX
F
CO2 Per Page Load
Action
4.33g CO2 per view
FIX
4.33g CO2 per view
Critical::
4.33g CO2 per page view
This page transfers 18.3 MB, producing an estimated 4.33g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.11g, network 0.89g, end-user device 3.32g.
Got: 4.33g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 519.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 519.2 kg of CO2 annually — equivalent to charging 64897 smartphones.
Info::
Green hosting reduces data center emissions

4.33g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 18.3 MB

Your site
4.33g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.11g
Network
0.89g
End-user device
3.32g
At 10,000 monthly views: Monthly: 43.3 kg · Annual: 519.2 kg · ≈ 64897 smartphone charges
F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
4.33g 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

4.33g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 621% more
vs Target 765% more
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
Apache HTTP Server uses renewable energy
Info::
Apache HTTP Server: 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 Apache HTTP Server✓CDN Not identified✗

Apache HTTP Server: Verified by the Green Web Foundation

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+
Repeat Visit Weight
100% cached
PASS
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 17 KB (vs 18718 KB first visit). 62 of 63 resources are served from browser cache, saving 4.32g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 4.33g)
First visit
18718 KB
Repeat visit
17 KB

100% reduction on repeat visits

Saving 4.32g CO2 per returning visitor

62 resources served from cache · 1 resources re-downloaded

A+
Transfer Efficiency
100% efficient
PASS
100% efficient
Info::
Transfer efficiency: 100%
Only 22 KB of potential savings identified. Your page is well-optimized for size.
100% efficient

Total waste: 22 KB (0% of page weight)

Unused JS 22 KB

0.01g unnecessary CO2 per visit

Actual transfer 18718 KB
Theoretical minimum 18695 KB
Potential savings 22 KB (0.01g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Hetzner Online GmbH

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

Send Feedback