https://wallpapers.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
76
GRADE
C
FIX
1
REVIEW
2
PASS
3
INFO
0
Checks
63 PASS 2 REVIEW 1 FIX
DCarbon BudgetAction53th percentileFIX
Carbon Budget
Action53th percentile
53th percentile
Warning::
0.72g CO2 — above the median website (0.60g)
Heavier than an estimated 47% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 53th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.72g
53rd percentile
Cleaner than 47% of websites
✗ Above the median website
vs Median 19% more
vs Target 43% more
BCO2 Per Page Load0.72g CO2 per viewREVIEW
CO2 Per Page Load
0.72g CO2 per view
0.72g CO2 per view
Info::
0.72g CO2 per page view
This page transfers 3.0 MB, producing an estimated 0.72g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.15g, end-user device 0.55g.
Got: 0.72g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 85.9 kg CO2/year
With 10,000 page views per month, this page would generate approximately 85.9 kg of CO2 annually — equivalent to charging 10736 smartphones.
Info::
Green hosting reduces data center emissions
0.72g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 47% of websites
Sustainable Web Design model v4 · Page size: 3.0 MB
Your site
0.72g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.15g
End-user device
0.55g
At 10,000 monthly views: Monthly: 7.2 kg · Annual: 85.9 kg · ≈ 10736 smartphone charges
CTransfer EfficiencyAction67% efficientREVIEW
Transfer Efficiency
Action67% efficient
67% efficient
Warning::
Transfer efficiency: 67%
An estimated 1018 KB (33%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1018 KB of unused JavaScript. This wasted data produces 0.24g of unnecessary CO2 per page view.
Total waste: 1018 KB (33% of page weight)
Unused JS 1018 KB
0.24g unnecessary CO2 per visit
Actual transfer 3096 KB
Theoretical minimum 2078 KB
Potential savings 1018 KB (0.24g CO2)
See Deep Analysis sections above for specific optimizations.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Hetzner Online GmbH, CDN: Bunny CDN
Info::
Hetzner Online GmbH: Verified by the Green Web Foundation
Info::
Bunny CDN: Carbon-neutral CDN with renewable energy
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 Bunny CDN✓
Hetzner Online GmbH: Verified by the Green Web Foundation
Bunny CDN: Carbon-neutral CDN with renewable energy
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight96% cachedPASS
Repeat Visit Weight
96% cached
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 120 KB (vs 3096 KB first visit). 205 of 235 resources are served from browser cache, saving 0.69g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 0.72g)
First visit
3096 KB
Repeat visit
120 KB
96% reduction on repeat visits
Saving 0.69g CO2 per returning visitor
205 resources served from cache · 30 resources re-downloaded
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.