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https://optinmonster.com

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
0
PASS
4
INFO
0
Device:
Mobile Desktop
Checks
6
4 PASS 2 FIX
F
CO2 Per Page Load
Action
1.69g CO2 per view
FIX
1.69g CO2 per view
Warning::
1.69g CO2 per page view
This page transfers 7.1 MB, producing an estimated 1.69g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.04g, network 0.35g, end-user device 1.30g.
Got: 1.69g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 202.4 kg CO2/year
With 10,000 page views per month, this page would generate approximately 202.4 kg of CO2 annually — equivalent to charging 25296 smartphones.
Info::
Green hosting reduces data center emissions

1.69g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 19% of websites

Sustainable Web Design model v4 · Page size: 7.1 MB

Your site
1.69g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.04g
Network
0.35g
End-user device
1.30g
At 10,000 monthly views: Monthly: 16.9 kg · Annual: 202.4 kg · ≈ 25296 smartphone charges
F
Carbon Budget
Action
81th percentile
FIX
81th percentile
Warning::
1.69g CO2 — above the median website (0.60g)
Heavier than an estimated 19% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 81th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.69g

81st percentile

Cleaner than 19% of websites

✗ Above the median website

vs Median 181% more
vs Target 237% more
A+
Green Hosting
Green (both)
PASS
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Google Cloud, CDN: Cloudflare
Info::
Google Cloud: Verified by the Green Web Foundation
Info::
Cloudflare: 100% renewable energy for global network since 2019
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 Cloudflare✓

Google Cloud: Verified by the Green Web Foundation

Cloudflare: 100% renewable energy for global network since 2019

Based on known provider commitments. Verify at thegreenwebfoundation.org

A+
Repeat Visit Weight
98% cached
PASS
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 141 KB (vs 7296 KB first visit). 327 of 329 resources are served from browser cache, saving 1.65g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 1.69g)
First visit
7296 KB
Repeat visit
141 KB

98% reduction on repeat visits

Saving 1.65g CO2 per returning visitor

327 resources served from cache · 2 resources re-downloaded

A+
Transfer Efficiency
94% efficient
PASS
94% efficient
Info::
Transfer efficiency: 94%
Only 449 KB of potential savings identified. Your page is well-optimized for size.
94% efficient

Total waste: 449 KB (6% of page weight)

Unused JS 449 KB

0.10g unnecessary CO2 per visit

Actual transfer 7296 KB
Theoretical minimum 6846 KB
Potential savings 449 KB (0.10g 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: Cloudflare

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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