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https://sentry.io

Sustainability

· 6 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
90
GRADE
A
FIX
0
REVIEW
2
PASS
4
INFO
0
Device:
Mobile Desktop
Checks
6
4 PASS 2 REVIEW
B
Green Hosting
Green (hosting)
REVIEW
Green (hosting)
Info::
Amazon Web Services uses renewable energy
Info::
Amazon Web Services: Verified by the Green Web Foundation
Info::
Google Cloud CDN: Inherits Google Cloud regional renewable mix
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 Amazon Web Services✓CDN Google Cloud CDN✗

Amazon Web Services: Verified by the Green Web Foundation

Google Cloud CDN: Inherits Google Cloud regional renewable mix

Based on known provider commitments. Verify at thegreenwebfoundation.org

B
Carbon Budget
34th percentile
REVIEW
34th percentile
Info::
0.44g CO2 — below the sustainability target of 0.50g
Cleaner than an estimated 66% of websites analyzed. This page meets the Web Sustainability Guidelines target.
Info::
Estimated 34th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

0.44g

34th percentile

Cleaner than 66% of websites

✓ Below the Web Sustainability Guidelines target

vs Median 26% cleaner ✓
vs Target 11% cleaner ✓
A
CO2 Per Page Load
0.44g CO2 per view
PASS
0.44g CO2 per view
Info::
0.44g CO2 per page view
This page transfers 1.9 MB, producing an estimated 0.44g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.01g, network 0.09g, end-user device 0.34g.
Got: 0.44g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 53.3 kg CO2/year
With 10,000 page views per month, this page would generate approximately 53.3 kg of CO2 annually — equivalent to charging 6668 smartphones.
Info::
Green hosting reduces data center emissions

0.44g

Carbon Footprint per page view

✓ Below sustainability target (0.50g)

Cleaner than 66% of websites

Sustainable Web Design model v4 · Page size: 1.9 MB

Your site
0.44g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.01g
Network
0.09g
End-user device
0.34g
At 10,000 monthly views: Monthly: 4.4 kg · Annual: 53.3 kg · ≈ 6668 smartphone charges
A+
Repeat Visit Weight
91% cached
PASS
91% cached
Info::
91% reduction on repeat visits
Returning visitors download only 166 KB (vs 1923 KB first visit). 54 of 55 resources are served from browser cache, saving 0.41g CO2 per repeat visit.
Info::
Repeat visit: 0.04g CO2 (first visit: 0.44g)
First visit
1923 KB
Repeat visit
166 KB

91% reduction on repeat visits

Saving 0.41g CO2 per returning visitor

54 resources served from cache · 1 resources re-downloaded

A+
Transfer Efficiency
99% efficient
PASS
99% efficient
Info::
Transfer efficiency: 99%
Only 23 KB of potential savings identified. Your page is well-optimized for size.
99% efficient

Total waste: 23 KB (1% of page weight)

Unused JS 23 KB

0.01g unnecessary CO2 per visit

Actual transfer 1923 KB
Theoretical minimum 1899 KB
Potential savings 23 KB (0.01g 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: Google Cloud

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

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