https://knowyourmeme.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
1
REVIEW
2
PASS
3
INFO
0
Checks
63 PASS 2 REVIEW 1 FIX
DCarbon BudgetAction52th percentileFIX
Carbon Budget
Action52th percentile
52th percentile
Warning::
0.69g CO2 — above the median website (0.60g)
Heavier than an estimated 48% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 52th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.69g
52nd percentile
Cleaner than 48% of websites
✗ Above the median website
vs Median 14% more
vs Target 37% more
BCO2 Per Page Load0.69g CO2 per viewREVIEW
CO2 Per Page Load
0.69g CO2 per view
0.69g CO2 per view
Info::
0.69g CO2 per page view
This page transfers 2.9 MB, producing an estimated 0.69g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.02g, network 0.14g, end-user device 0.53g.
Got: 0.69g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 82.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 82.2 kg of CO2 annually — equivalent to charging 10277 smartphones.
Info::
Green hosting reduces data center emissions
0.69g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 48% of websites
Sustainable Web Design model v4 · Page size: 2.9 MB
Your site
0.69g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.02g
Network
0.14g
End-user device
0.53g
At 10,000 monthly views: Monthly: 6.9 kg · Annual: 82.2 kg · ≈ 10277 smartphone charges
BTransfer Efficiency80% efficientREVIEW
Transfer Efficiency
80% efficient
80% efficient
Info::
Transfer efficiency: 80%
An estimated 584 KB (20%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 584 KB of unused JavaScript. This wasted data produces 0.14g of unnecessary CO2 per page view.
Total waste: 584 KB (20% of page weight)
Unused JS 584 KB
0.14g unnecessary CO2 per visit
Actual transfer 2964 KB
Theoretical minimum 2380 KB
Potential savings 584 KB (0.14g CO2)
See Deep Analysis sections above for specific optimizations.
A+Green HostingGreen (both)PASS
Green Hosting
Green (both)
Green (both)
Info::
Both hosting and CDN use renewable energy
Got: Hosting: Cloudflare, CDN: Cloudflare
Info::
Cloudflare: 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 Cloudflare✓CDN Cloudflare✓
Cloudflare: 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 Weight98% cachedPASS
Repeat Visit Weight
98% cached
98% cached
Info::
98% reduction on repeat visits
Returning visitors download only 55 KB (vs 2964 KB first visit). 118 of 124 resources are served from browser cache, saving 0.67g CO2 per repeat visit.
Info::
Repeat visit: 0.01g CO2 (first visit: 0.69g)
First visit
2964 KB
Repeat visit
55 KB
98% reduction on repeat visits
Saving 0.67g CO2 per returning visitor
118 resources served from cache · 6 resources re-downloaded
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
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.