https://excite.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
89
GRADE
B
FIX
0
REVIEW
2
PASS
4
INFO
0
Checks
64 PASS 2 REVIEW
CTransfer EfficiencyAction66% efficientREVIEW
Transfer Efficiency
Action66% efficient
66% efficient
Warning::
Transfer efficiency: 66%
An estimated 264 KB (34%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 264 KB of unused JavaScript. This wasted data produces 0.06g of unnecessary CO2 per page view.
Total waste: 264 KB (34% of page weight)
Unused JS 264 KB
0.06g unnecessary CO2 per visit
Actual transfer 781 KB
Theoretical minimum 516 KB
Potential savings 264 KB (0.06g CO2)
See Deep Analysis sections above for specific optimizations.
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+CO2 Per Page Load0.18g CO2 per viewPASS
CO2 Per Page Load
0.18g CO2 per view
0.18g CO2 per view
Info::
0.18g CO2 per page view
This page transfers 0.8 MB, producing an estimated 0.18g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.00g, network 0.04g, end-user device 0.14g.
Got: 0.18g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 21.7 kg CO2/year
With 10,000 page views per month, this page would generate approximately 21.7 kg of CO2 annually — equivalent to charging 2709 smartphones.
Info::
Green hosting reduces data center emissions
0.18g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 90% of websites
Sustainable Web Design model v4 · Page size: 0.8 MB
Your site
0.18g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.00g
Network
0.04g
End-user device
0.14g
At 10,000 monthly views: Monthly: 1.8 kg · Annual: 21.7 kg · ≈ 2709 smartphone charges
AGreen HostingGreen (cdn)PASS
Green Hosting
Green (cdn)
Green (cdn)
Info::
Fastly CDN uses renewable energy
Since most traffic is served through the CDN, the majority of data transfer energy is renewable.
Info::
Fastly: 100% renewable energy for edge network
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 Not identified✗CDN Fastly✓
Fastly: 100% renewable energy for edge network
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 5 KB (vs 781 KB first visit). 45 of 46 resources are served from browser cache, saving 0.18g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.18g)
First visit
781 KB
Repeat visit
5 KB
99% reduction on repeat visits
Saving 0.18g CO2 per returning visitor
45 resources served from cache · 1 resources re-downloaded
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.18g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 90% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 10th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.18g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 70% cleaner ✓
vs Target 64% cleaner ✓
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.