Skip to content
https://thinkific.com

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
0
PASS
4
INFO
0
Device:
Mobile Desktop
Checks
6
4 PASS 2 FIX
D
CO2 Per Page Load
Action
1.34g CO2 per view
FIX
1.34g CO2 per view
Warning::
1.34g CO2 per page view
This page transfers 5.6 MB, producing an estimated 1.34g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.03g, network 0.28g, end-user device 1.03g.
Got: 1.34g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 160.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 160.2 kg of CO2 annually — equivalent to charging 20030 smartphones.
Info::
Green hosting reduces data center emissions

1.34g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 29% of websites

Sustainable Web Design model v4 · Page size: 5.6 MB

Your site
1.34g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.03g
Network
0.28g
End-user device
1.03g
At 10,000 monthly views: Monthly: 13.4 kg · Annual: 160.2 kg · ≈ 20030 smartphone charges
F
Carbon Budget
Action
71th percentile
FIX
71th percentile
Warning::
1.34g CO2 — above the median website (0.60g)
Heavier than an estimated 29% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 71th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.34g

71st percentile

Cleaner than 29% of websites

✗ Above the median website

vs Median 123% more
vs Target 167% more
A+
Green Hosting
Green (both)
PASS
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Something Familiar, CDN: Cloudflare
Info::
Something Familiar: 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 Something Familiar✓CDN Cloudflare✓

Something Familiar: 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
96% cached
PASS
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 208 KB (vs 5777 KB first visit). 106 of 107 resources are served from browser cache, saving 1.29g CO2 per repeat visit.
Info::
Repeat visit: 0.05g CO2 (first visit: 1.34g)
First visit
5777 KB
Repeat visit
208 KB

96% reduction on repeat visits

Saving 1.29g CO2 per returning visitor

106 resources served from cache · 1 resources re-downloaded

A+
Transfer Efficiency
91% efficient
PASS
91% efficient
Info::
Transfer efficiency: 91%
Only 497 KB of potential savings identified. Your page is well-optimized for size.
91% efficient

Total waste: 497 KB (9% of page weight)

Unused JS 497 KB

0.12g unnecessary CO2 per visit

Actual transfer 5777 KB
Theoretical minimum 5279 KB
Potential savings 497 KB (0.12g 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: Something Familiar

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback