Skip to content
https://bangbros.com

Sustainability

· 8 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
65
GRADE
D
FIX
3
REVIEW
2
PASS
2
INFO
1
Device:
Mobile Desktop
Checks
8
2 PASS 2 REVIEW 3 FIX
F
CO2 Per Page Load
Action
3.88g CO2 per view
FIX
3.88g CO2 per view
Critical::
3.88g CO2 per page view
This page transfers 13.7 MB, producing an estimated 3.88g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.72g, network 0.67g, end-user device 2.49g.
Got: 3.88g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 465.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 465.3 kg of CO2 annually — equivalent to charging 58167 smartphones.

3.88g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 5% of websites

Sustainable Web Design model v4 · Page size: 13.7 MB

Your site
3.88g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.72g
Network
0.67g
End-user device
2.49g
At 10,000 monthly views: Monthly: 38.8 kg · Annual: 465.3 kg · ≈ 58167 smartphone charges
D
Green Hosting
Action
Unknown
FIX
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

F
Carbon Budget
Action
95th percentile
FIX
95th percentile
Warning::
3.88g 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

3.88g

95th percentile

Cleaner than 5% of websites

✗ Above the median website

vs Median 546% more
vs Target 676% more
B
Transfer Efficiency
88% efficient
REVIEW
88% efficient
Info::
Transfer efficiency: 88%
An estimated 1681 KB (12%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1681 KB of unused JavaScript. This wasted data produces 0.47g of unnecessary CO2 per page view.
88% efficient

Total waste: 1681 KB (12% of page weight)

Unused JS 1681 KB

0.47g unnecessary CO2 per visit

Actual transfer 14021 KB
Theoretical minimum 12339 KB
Potential savings 1681 KB (0.47g CO2)

See Deep Analysis sections above for specific optimizations.

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 180 KB (vs 14021 KB first visit). 157 of 160 resources are served from browser cache, saving 3.83g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 3.88g)
First visit
14021 KB
Repeat visit
180 KB

99% reduction on repeat visits

Saving 3.83g CO2 per returning visitor

157 resources served from cache · 3 resources re-downloaded

A+
Web Font Weight Variants
2 font weights loaded across 2 famil(y/ies) -- reasonable
PASS
2 font weights loaded across 2 famil(y/ies) -- reasonable
Info::
2 font weight(s) loaded across 2 famil(y/ies)
Image Optimization
12 images, 0 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

12

Total Size

0 KB

Oversized

6

12 missing dimensions 4 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback