https://instagram.com
Sustainability
· 7 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.SCORE
61
GRADE
D
FIX
4
REVIEW
2
PASS
1
INFO
0
Checks
71 PASS 2 REVIEW 4 FIX
DCO2 Per Page LoadAction0.98g CO2 per viewFIX
CO2 Per Page Load
Action0.98g CO2 per view
0.98g CO2 per view
Info::
0.98g CO2 per page view
This page transfers 3.5 MB, producing an estimated 0.98g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.18g, network 0.17g, end-user device 0.63g.
Got: 0.98g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 117.6 kg CO2/year
With 10,000 page views per month, this page would generate approximately 117.6 kg of CO2 annually — equivalent to charging 14695 smartphones.
0.98g
Carbon Footprint per page view
✗ Above sustainability target (0.50g)
Cleaner than 40% of websites
Sustainable Web Design model v4 · Page size: 3.5 MB
Your site
0.98g
Top 10%
0.20g
Target
0.50g
Median website
0.60g
Energy Breakdown
Data center
0.18g
Network
0.17g
End-user device
0.63g
At 10,000 monthly views: Monthly: 9.8 kg · Annual: 117.6 kg · ≈ 14695 smartphone charges
DGreen HostingActionNot greenFIX
Green Hosting
ActionNot green
Not green
Info::
No confirmed renewable energy commitment detected
Consider providers like Cloudflare, Google Cloud, or Vercel that match 100% of their energy use with renewables.
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 HostingNot Green Hosted
Hosting Next.js✗CDN Not identified✗
Based on known provider commitments. Verify at thegreenwebfoundation.org
DCarbon BudgetAction60th percentileFIX
Carbon Budget
Action60th percentile
60th percentile
Warning::
0.98g CO2 — above the median website (0.60g)
Heavier than an estimated 40% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 60th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website
0.98g
60th percentile
Cleaner than 40% of websites
✗ Above the median website
vs Median 63% more
vs Target 96% more
DTransfer EfficiencyAction53% efficientFIX
Transfer Efficiency
Action53% efficient
53% efficient
Warning::
Transfer efficiency: 53%
An estimated 1650 KB (47%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 1650 KB of unused JavaScript. This wasted data produces 0.46g of unnecessary CO2 per page view.
Total waste: 1650 KB (47% of page weight)
Unused JS 1650 KB
0.46g unnecessary CO2 per visit
Actual transfer 3542 KB
Theoretical minimum 1891 KB
Potential savings 1650 KB (0.46g CO2)
See Deep Analysis sections above for specific optimizations.
BWeb Font Weight VariantsNo detectable Google Fonts weightsREVIEW
Web Font Weight Variants
No detectable Google Fonts weights
No detectable Google Fonts weights
Info::
No detectable Google Fonts weights
The analyzer detects font weights via Google Fonts URL parameters (~70% of font-using sites). Self-hosted fonts and non-Google CDN fonts aren't visible to URL-based detection. If you self-host fonts, manually audit how many @font-face weights you ship -- 2-3 weights per family is typically enough; 5+ is usually unused payload.
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 114 KB (vs 3542 KB first visit). 43 of 44 resources are served from browser cache, saving 0.95g CO2 per repeat visit.
Info::
Repeat visit: 0.03g CO2 (first visit: 0.98g)
First visit
3542 KB
Repeat visit
114 KB
97% reduction on repeat visits
Saving 0.95g CO2 per returning visitor
43 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.