https://instagram.com
Sustainability
· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
58
GRADE
D
FIX
4
REVIEW
1
PASS
1
INFO
0
Checks
61 PASS 1 REVIEW 4 FIX
DCO2 Per Page LoadAction1.05g CO2 per viewFIX
CO2 Per Page Load
Action1.05g CO2 per view
1.05g CO2 per view
Warning::
1.05g CO2 per page view
This page transfers 3.7 MB, producing an estimated 1.05g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.19g, network 0.18g, end-user device 0.68g.
Got: 1.05g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 126.2 kg CO2/year
With 10,000 page views per month, this page would generate approximately 126.2 kg of CO2 annually — equivalent to charging 15778 smartphones.
1.05g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 38% of websites
Sustainable Web Design model v4 · Page size: 3.7 MB
Your site
1.05g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.19g
Network
0.18g
End-user device
0.68g
At 10,000 monthly views: Monthly: 10.5 kg · Annual: 126.2 kg · ≈ 15778 smartphone charges
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 BudgetAction62th percentileFIX
Carbon Budget
Action62th percentile
62th percentile
Warning::
1.05g CO2 — above the median website (0.60g)
Heavier than an estimated 38% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 62th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
1.05g
62nd percentile
Cleaner than 38% of websites
✗ Above the median website
vs Median 75% more
vs Target 110% more
DTransfer EfficiencyAction49% efficientFIX
Transfer Efficiency
Action49% efficient
49% efficient
Critical::
Transfer efficiency: 49%
An estimated 1936 KB (51%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1936 KB of unused JavaScript. This wasted data produces 0.54g of unnecessary CO2 per page view.
Total waste: 1936 KB (51% of page weight)
Unused JS 1936 KB
0.54g unnecessary CO2 per visit
Actual transfer 3803 KB
Theoretical minimum 1867 KB
Potential savings 1936 KB (0.54g CO2)
See Deep Analysis sections above for specific optimizations.
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 Weight97% cachedPASS
Repeat Visit Weight
97% cached
97% cached
Info::
97% reduction on repeat visits
Returning visitors download only 125 KB (vs 3803 KB first visit). 44 of 45 resources are served from browser cache, saving 1.02g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 1.05g)
First visit
3803 KB
Repeat visit
125 KB
97% reduction on repeat visits
Saving 1.02g CO2 per returning visitor
44 resources served from cache · 1 resources re-downloaded
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.