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https://blip.tv

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
72
GRADE
C
FIX
2
REVIEW
2
PASS
2
INFO
0
Device:
Mobile Desktop
Checks
6
2 PASS 2 REVIEW 2 FIX
D
CO2 Per Page Load
Action
1.23g CO2 per view
FIX
1.23g CO2 per view
Warning::
1.23g CO2 per page view
This page transfers 5.2 MB, producing an estimated 1.23g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.25g, end-user device 0.94g.
Got: 1.23g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 147.6 kg CO2/year
With 10,000 page views per month, this page would generate approximately 147.6 kg of CO2 annually — equivalent to charging 18447 smartphones.
Info::
Green hosting reduces data center emissions

1.23g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 33% of websites

Sustainable Web Design model v4 · Page size: 5.2 MB

Your site
1.23g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.03g
Network
0.25g
End-user device
0.94g
At 10,000 monthly views: Monthly: 12.3 kg · Annual: 147.6 kg · ≈ 18447 smartphone charges
D
Carbon Budget
Action
67th percentile
FIX
67th percentile
Warning::
1.23g CO2 — above the median website (0.60g)
Heavier than an estimated 33% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 67th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.23g

67th percentile

Cleaner than 33% of websites

✗ Above the median website

vs Median 105% more
vs Target 146% more
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
Google Cloud uses renewable energy
Info::
Google Cloud: Verified by the Green Web Foundation
Info::
Google Cloud CDN: Inherits Google Cloud regional renewable mix
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 Google Cloud✓CDN Google Cloud CDN✗

Google Cloud: Verified by the Green Web Foundation

Google Cloud CDN: Inherits Google Cloud regional renewable mix

Based on known provider commitments. Verify at thegreenwebfoundation.org

B
Repeat Visit Weight
75% cached
REVIEW
75% cached
Info::
75% reduction on repeat visits
Returning visitors download only 1344 KB (vs 5320 KB first visit). 163 of 171 resources are served from browser cache, saving 0.92g CO2 per repeat visit.
Info::
Repeat visit: 0.31g CO2 (first visit: 1.23g)
First visit
5320 KB
Repeat visit
1344 KB

75% reduction on repeat visits

Saving 0.92g CO2 per returning visitor

163 resources served from cache · 8 resources re-downloaded

A+
Transfer Efficiency
94% efficient
PASS
94% efficient
Info::
Transfer efficiency: 94%
Only 335 KB of potential savings identified. Your page is well-optimized for size.
94% efficient

Total waste: 335 KB (6% of page weight)

Unused JS 335 KB

0.08g unnecessary CO2 per visit

Actual transfer 5320 KB
Theoretical minimum 4985 KB
Potential savings 335 KB (0.08g CO2)

See Deep Analysis sections above for specific optimizations.

A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

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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