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https://romewebagency.it

Sustainability

· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
68
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Device:
Mobile Desktop
Checks
8
2 PASS 2 REVIEW 3 FIX
D
CO2 Per Page Load
Action
0.82g CO2 per view
FIX
0.82g CO2 per view
Info::
0.82g CO2 per page view
This page transfers 2.9 MB, producing an estimated 0.82g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.15g, network 0.14g, end-user device 0.53g.
Got: 0.82g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 98.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 98.3 kg of CO2 annually — equivalent to charging 12286 smartphones.

0.82g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 44% of websites

Sustainable Web Design model v4 · Page size: 2.9 MB

Your site
0.82g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.15g
Network
0.14g
End-user device
0.53g
At 10,000 monthly views: Monthly: 8.2 kg · Annual: 98.3 kg · ≈ 12286 smartphone charges
D
Green Hosting
Action
Not green
FIX
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
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 HostingNot Green Hosted
Hosting Apache HTTP Server✗CDN Not identified✗

Based on known provider commitments. Verify at thegreenwebfoundation.org

D
Carbon Budget
Action
56th percentile
FIX
56th percentile
Warning::
0.82g CO2 — above the median website (0.60g)
Heavier than an estimated 44% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 56th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.82g

56th percentile

Cleaner than 44% of websites

✗ Above the median website

vs Median 37% more
vs Target 64% more
C
Web Font Weight Variants
Action
21 font weights loaded across 2 famil(y/ies)
REVIEW
21 font weights loaded across 2 famil(y/ies)
Warning::
21 font weights loaded -- likely 100+ KB of unused payload
Loading 21 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: Roboto, Source Sans Pro%3A200%2C200italic%2C300%2C300italic%2C400%2C400italic%2C600%2C600italic%2C700%2C700italic%2C900%2C900italic%7CMontserrat%3A100%2C200%2C300%2C400%2C500%2C600%2C700%2C800%2C900%2C100italic%2C200italic%2C300italic%2C400italic%2C500italic%2C600italic%2C700italic%2C800italic%2C900italic.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Repeat Visit Weight
99% cached
PASS
99% cached
Info::
99% reduction on repeat visits
Returning visitors download only 25 KB (vs 2961 KB first visit). 45 of 46 resources are served from browser cache, saving 0.81g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.82g)
First visit
2961 KB
Repeat visit
25 KB

99% reduction on repeat visits

Saving 0.81g CO2 per returning visitor

45 resources served from cache · 1 resources re-downloaded

A+
Transfer Efficiency
99% efficient
PASS
99% efficient
Info::
Transfer efficiency: 99%
Only 22 KB of potential savings identified. Your page is well-optimized for size.
99% efficient

Total waste: 22 KB (1% of page weight)

Unused JS 22 KB

0.01g unnecessary CO2 per visit

Actual transfer 2961 KB
Theoretical minimum 2939 KB
Potential savings 22 KB (0.01g CO2)

See Deep Analysis sections above for specific optimizations.

Image Optimization
8 images, 0 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

8

Total Size

0 KB

Oversized

4

3 missing dimensions 6 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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