https://tilda.cc
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
74
GRADE
C
FIX
2
REVIEW
2
PASS
2
INFO
0
Checks
62 PASS 2 REVIEW 2 FIX
DGreen HostingActionUnknownFIX
Green Hosting
ActionUnknown
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
DCarbon BudgetAction53th percentileFIX
Carbon Budget
Action53th percentile
53th percentile
Warning::
0.72g CO2 — above the median website (0.60g)
Heavier than an estimated 47% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 53th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.72g
53rd percentile
Cleaner than 47% of websites
✗ Above the median website
vs Median 19% more
vs Target 43% more
BCO2 Per Page Load0.72g CO2 per viewREVIEW
CO2 Per Page Load
0.72g CO2 per view
0.72g CO2 per view
Info::
0.72g CO2 per page view
This page transfers 2.5 MB, producing an estimated 0.72g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.13g, network 0.12g, end-user device 0.46g.
Got: 0.72g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 85.8 kg CO2/year
With 10,000 page views per month, this page would generate approximately 85.8 kg of CO2 annually — equivalent to charging 10727 smartphones.
0.72g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 47% of websites
Sustainable Web Design model v4 · Page size: 2.5 MB
Your site
0.72g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.13g
Network
0.12g
End-user device
0.46g
At 10,000 monthly views: Monthly: 7.2 kg · Annual: 85.8 kg · ≈ 10727 smartphone charges
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Repeat Visit Weight96% cachedPASS
Repeat Visit Weight
96% cached
96% cached
Info::
96% reduction on repeat visits
Returning visitors download only 96 KB (vs 2585 KB first visit). 100 of 101 resources are served from browser cache, saving 0.69g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 0.72g)
First visit
2585 KB
Repeat visit
96 KB
96% reduction on repeat visits
Saving 0.69g CO2 per returning visitor
100 resources served from cache · 1 resources re-downloaded
A+Transfer Efficiency99% efficientPASS
Transfer Efficiency
99% efficient
99% efficient
Info::
Transfer efficiency: 99%
Only 20 KB of potential savings identified. Your page is well-optimized for size.
Total waste: 20 KB (1% of page weight)
Unused JS 20 KB
0.01g unnecessary CO2 per visit
Actual transfer 2585 KB
Theoretical minimum 2565 KB
Potential savings 20 KB (0.01g CO2)
See Deep Analysis sections above for specific optimizations.
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.