https://appsgolem.com
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
95
GRADE
A
FIX
0
REVIEW
2
PASS
5
INFO
1
Checks
85 PASS 2 REVIEW
BGreen HostingGreen (hosting)REVIEW
Green Hosting
Green (hosting)
Green (hosting)
Info::
OVH uses renewable energy
Info::
OVH: 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 OVH✓CDN Not identified✗
OVH: Verified by the Green Web Foundation
Based on known provider commitments. Verify at thegreenwebfoundation.org
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
A+CO2 Per Page Load0.12g CO2 per viewPASS
CO2 Per Page Load
0.12g CO2 per view
0.12g CO2 per view
Info::
0.12g CO2 per page view
This page transfers 0.5 MB, producing an estimated 0.12g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.00g, network 0.03g, end-user device 0.10g.
Got: 0.12g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 14.9 kg CO2/year
With 10,000 page views per month, this page would generate approximately 14.9 kg of CO2 annually — equivalent to charging 1856 smartphones.
Info::
Green hosting reduces data center emissions
0.12g
Carbon Footprint per page view
✓ Below sustainability target (0.50g)
Cleaner than 90% of websites
Sustainable Web Design model v4 · Page size: 0.5 MB
Your site
0.12g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.00g
Network
0.03g
End-user device
0.10g
At 10,000 monthly views: Monthly: 1.2 kg · Annual: 14.9 kg · ≈ 1856 smartphone charges
A+Repeat Visit Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 14 KB (vs 535 KB first visit). 55 of 56 resources are served from browser cache, saving 0.12g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 0.12g)
First visit
535 KB
Repeat visit
14 KB
97% reduction on repeat visits
Saving 0.12g CO2 per returning visitor
55 resources served from cache · 1 resources re-downloaded
A+Carbon Budget10th percentilePASS
Carbon Budget
10th percentile
10th percentile
Info::
0.12g 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
0.12g
10th percentile
Cleaner than 90% of websites
✓ Below the Web Sustainability Guidelines target
vs Median 79% cleaner ✓
vs Target 75% cleaner ✓
A+Transfer Efficiency100% efficientPASS
Transfer Efficiency
100% efficient
100% efficient
Info::
Transfer efficiency: 100%
Only 0 KB of potential savings identified. Your page is well-optimized for size.
Actual transfer 535 KB
Theoretical minimum 535 KB
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: OVHcloud
Image Optimization60 images, 290 KB total, 175 KB wastedINFO
Image Optimization
60 images, 290 KB total, 175 KB wasted
Image Optimization Audit
Total Images
60
Total Size
290 KB
Oversized
13
Wasted
175 KB
13 missing alt text 56 missing dimensions 51 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.