https://iosoccer.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
70
GRADE
C
FIX
2
REVIEW
2
PASS
3
INFO
1
Checks
83 PASS 2 REVIEW 2 FIX
FCO2 Per Page LoadAction1.54g CO2 per viewFIX
CO2 Per Page Load
Action1.54g CO2 per view
1.54g CO2 per view
Warning::
1.54g CO2 per page view
This page transfers 6.5 MB, producing an estimated 1.54g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.32g, end-user device 1.18g.
Got: 1.54g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 184.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 184.5 kg of CO2 annually — equivalent to charging 23068 smartphones.
Info::
Green hosting reduces data center emissions
1.54g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 24% of websites
Sustainable Web Design model v4 · Page size: 6.5 MB
Your site
1.54g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.04g
Network
0.32g
End-user device
1.18g
At 10,000 monthly views: Monthly: 15.4 kg · Annual: 184.5 kg · ≈ 23068 smartphone charges
FCarbon BudgetAction76th percentileFIX
Carbon Budget
Action76th percentile
76th percentile
Warning::
1.54g CO2 — above the median website (0.60g)
Heavier than an estimated 24% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 76th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.54g
76th percentile
Cleaner than 24% of websites
✗ Above the median website
vs Median 156% more
vs Target 208% more
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
DigitalOcean uses renewable energy
Info::
DigitalOcean: 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 DigitalOcean✓CDN Not identified✗
DigitalOcean: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
BWeb Font Weight Variants6 font weights loaded across 1 famil(y/ies)REVIEW
Web Font Weight Variants
6 font weights loaded across 1 famil(y/ies)
6 font weights loaded across 1 famil(y/ies)
Info::
6 font weights loaded -- review whether all are used
5+ weights for a single page is often more than needed. Compare against the actual font-weight CSS rules in your stylesheets; trim weights that aren't applied to any element. Affected families: Montserrat.
A+Repeat Visit Weight99% cachedPASS
Repeat Visit Weight
99% cached
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 62 KB (vs 6653 KB first visit). 63 of 66 resources are served from browser cache, saving 1.52g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 1.54g)
First visit
6653 KB
Repeat visit
62 KB
99% reduction on repeat visits
Saving 1.52g CO2 per returning visitor
63 resources served from cache · 3 resources re-downloaded
A+Transfer Efficiency93% efficientPASS
Transfer Efficiency
93% efficient
93% efficient
Info::
Transfer efficiency: 93%
Only 459 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 459 KB (7% of page weight)
Unused JS 459 KB
0.11g unnecessary CO2 per visit
Actual transfer 6653 KB
Theoretical minimum 6194 KB
Potential savings 459 KB (0.11g 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: IONOS SE
Image Optimization4 images, 39 KB total, 15 KB wastedINFO
Image Optimization
4 images, 39 KB total, 15 KB wasted
Image Optimization Audit
Total Images
4
Total Size
39 KB
Oversized
1
Wasted
15 KB
1 missing alt text 4 missing dimensions 3 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.