https://www.psicologionline.net
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
83
GRADE
B
FIX
0
REVIEW
2
PASS
5
INFO
1
Checks
85 PASS 2 REVIEW
CTransfer EfficiencyAction75% efficientREVIEW
Transfer Efficiency
Action75% efficient
75% efficient
Warning::
Transfer efficiency: 75%
An estimated 315 KB (25%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 315 KB of unused JavaScript. This wasted data produces 0.07g of unnecessary CO2 per page view.
Total waste: 315 KB (25% of page weight)
Unused JS 315 KB
0.07g unnecessary CO2 per visit
Actual transfer 1251 KB
Theoretical minimum 936 KB
Potential savings 315 KB (0.07g CO2)
See Deep Analysis sections above for specific optimizations.
CWeb Font Weight VariantsAction8 font weights loaded across 2 famil(y/ies)REVIEW
Web Font Weight Variants
Action8 font weights loaded across 2 famil(y/ies)
8 font weights loaded across 2 famil(y/ies)
Warning::
8 font weights loaded -- likely 100+ KB of unused payload
Loading 8 font weights typically transfers 200-400 KB just for fonts. Most pages legitimately use 2-3 weights (regular + bold, maybe medium). Audit which weights your stylesheet actually applies and trim the Google Fonts URL accordingly. Affected families: Inter, Poppins.
ACO2 Per Page Load0.29g CO2 per viewPASS
CO2 Per Page Load
0.29g CO2 per view
0.29g CO2 per view
Info::
0.29g CO2 per page view
This page transfers 1.2 MB, producing an estimated 0.29g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.06g, end-user device 0.22g.
Got: 0.29g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 34.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 34.7 kg of CO2 annually — equivalent to charging 4338 smartphones.
Info::
Green hosting reduces data center emissions
0.29g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 82% of websites
Sustainable Web Design model v4 · Page size: 1.2 MB
Your site
0.29g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.01g
Network
0.06g
End-user device
0.22g
At 10,000 monthly views: Monthly: 2.9 kg · Annual: 34.7 kg · ≈ 4338 smartphone charges
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Cloudflare, CDN: Cloudflare
Info::
Cloudflare: Verified by the Green Web Foundation
Info::
Cloudflare: 100% renewable energy for global network since 2019
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 Cloudflare✓CDN Cloudflare✓
Cloudflare: Verified by the Green Web Foundation
Cloudflare: 100% renewable energy for global network since 2019
Based on known provider commitments. Verify at thegreenwebfoundation.org
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 18 KB (vs 1251 KB first visit). 72 of 73 resources are served from browser cache, saving 0.28g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.29g)
First visit
1251 KB
Repeat visit
18 KB
99% reduction on repeat visits
Saving 0.28g CO2 per returning visitor
72 resources served from cache · 1 resources re-downloaded
ACarbon Budget18th percentilePASS
Carbon Budget
18th percentile
18th percentile
Info::
0.29g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 82% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 18th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.29g
18th percentile
Cleaner than 82% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 52% cleaner ✓
vs Target 42% cleaner ✓
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: Cloudflare
Image Optimization96 images, 683 KB total, 168 KB wastedINFO
Image Optimization
96 images, 683 KB total, 168 KB wasted
Image Optimization Audit
Total Images
96
Total Size
683 KB
Oversized
6
Wasted
168 KB
96 missing dimensions 52 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.