https://outdooractive.com
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
Checks
63 PASS 1 REVIEW 2 FIX
FCO2 Per Page LoadAction3.73g CO2 per viewFIX
CO2 Per Page Load
Action3.73g CO2 per view
3.73g CO2 per view
Critical::
3.73g CO2 per page view
This page transfers 15.8 MB, producing an estimated 3.73g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.09g, network 0.77g, end-user device 2.87g.
Got: 3.73g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 448.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 448.2 kg of CO2 annually — equivalent to charging 56023 smartphones.
Info::
Green hosting reduces data center emissions
3.73g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 15.8 MB
Your site
3.73g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.09g
Network
0.77g
End-user device
2.87g
At 10,000 monthly views: Monthly: 37.3 kg · Annual: 448.2 kg · ≈ 56023 smartphone charges
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
3.73g 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
3.73g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 522% more
vs Target 647% more
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
Hetzner Online GmbH uses renewable energy
Info::
Hetzner Online GmbH: 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 Hetzner Online GmbH✓CDN Not identified✗
Hetzner Online GmbH: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 23 KB (vs 16158 KB first visit). 423 of 425 resources are served from browser cache, saving 3.73g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 3.73g)
First visit
16158 KB
Repeat visit
23 KB
100% reduction on repeat visits
Saving 3.73g CO2 per returning visitor
423 resources served from cache · 2 resources re-downloaded
A+Transfer Efficiency91% efficientPASS
Transfer Efficiency
91% efficient
91% efficient
Info::
Transfer efficiency: 91%
Only 1379 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 1379 KB (9% of page weight)
Unused JS 1379 KB
0.32g unnecessary CO2 per visit
Actual transfer 16158 KB
Theoretical minimum 14779 KB
Potential savings 1379 KB (0.32g 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: Hetzner Online GmbH
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.