https://www.oprc.it
Sustainability
· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
64
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Checks
82 PASS 2 REVIEW 3 FIX
FCO2 Per Page LoadAction2.57g CO2 per viewFIX
CO2 Per Page Load
Action2.57g CO2 per view
2.57g CO2 per view
Critical::
2.57g CO2 per page view
This page transfers 9.1 MB, producing an estimated 2.57g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.48g, network 0.44g, end-user device 1.65g.
Got: 2.57g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 308.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 308.5 kg of CO2 annually — equivalent to charging 38563 smartphones.
2.57g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 5% of websites
Sustainable Web Design model v4 · Page size: 9.1 MB
Your site
2.57g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.48g
Network
0.44g
End-user device
1.65g
At 10,000 monthly views: Monthly: 25.7 kg · Annual: 308.5 kg · ≈ 38563 smartphone charges
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
Unknown
Info::
Hosting provider could not be identified
Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments.
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 HostingUnable to Determine
Hosting Not identified✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
FCarbon BudgetAction95th percentileFIX
Carbon Budget
Action95th percentile
95th percentile
Warning::
2.57g CO2 — above the median website (0.60g)
Heavier than an estimated 5% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 95th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
2.57g
95th percentile
Cleaner than 5% of websites
✗ Above the median website
vs Median 328% more
vs Target 414% more
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.
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+Repeat Visit Weight100% cachedPASS
Repeat Visit Weight
100% cached
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 33 KB (vs 9296 KB first visit). 119 of 120 resources are served from browser cache, saving 2.56g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 2.57g)
First visit
9296 KB
Repeat visit
33 KB
100% reduction on repeat visits
Saving 2.56g CO2 per returning visitor
119 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency97% efficientPASS
Transfer Efficiency
97% efficient
97% efficient
Info::
Transfer efficiency: 97%
Only 286 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 286 KB (3% of page weight)
Unused JS 286 KB
0.08g unnecessary CO2 per visit
Actual transfer 9296 KB
Theoretical minimum 9009 KB
Potential savings 286 KB (0.08g CO2)
See Deep Analysis sections above for specific optimizations.
Image Optimization56 images, 13228 KB total, 4925 KB wastedINFO
Image Optimization
56 images, 13228 KB total, 4925 KB wasted
Image Optimization Audit
Total Images
56
Total Size
13228 KB
Oversized
17
Wasted
4925 KB
56 missing dimensions 39 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.