Skip to content
https://www.ed.gov/laws-and-policy/hearings-and-appeals/hearings-and-appeals-secretary-decisions

Sustainability

· 7 checks — CO2 emissions, green hosting, repeat-visit weight, carbon budget, and transfer efficiency rolled into one auditable list.
SCORE
68
GRADE
D
FIX
3
REVIEW
3
PASS
1
INFO
0
Device:
Mobile Desktop
Checks
7
1 PASS 3 REVIEW 3 FIX
D
CO2 Per Page Load
Action
1.14g CO2 per view
FIX
1.14g CO2 per view
Warning::
1.14g CO2 per page view
This page transfers 4.0 MB, producing an estimated 1.14g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.21g, network 0.20g, end-user device 0.73g.
Got: 1.14g CO2 Expected: < 0.50g (sustainability target)
Info::
At 10,000 monthly views: 136.5 kg CO2/year
With 10,000 page views per month, this page would generate approximately 136.5 kg of CO2 annually — equivalent to charging 17062 smartphones.

1.14g

Carbon Footprint per page view

✗ Above sustainability target (0.50g)

Cleaner than 35% of websites

Sustainable Web Design model v4 · Page size: 4.0 MB

Your site
1.14g
Top 10%
0.20g
Target
0.50g
Median website
0.60g

Energy Breakdown

Data center
0.21g
Network
0.20g
End-user device
0.73g
At 10,000 monthly views: Monthly: 11.4 kg · Annual: 136.5 kg · ≈ 17062 smartphone charges
D
Green Hosting
Action
Not green
FIX
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::
Azure: Microsoft is carbon-negative; Azure renewable varies by region
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 Azure✗CDN Azure Front Door✗

Azure: Microsoft is carbon-negative; Azure renewable varies by region

Based on known provider commitments. Verify at thegreenwebfoundation.org

D
Carbon Budget
Action
65th percentile
FIX
65th percentile
Warning::
1.14g CO2 — above the median website (0.60g)
Heavier than an estimated 35% of websites. Reducing page weight, optimizing images, and removing unused JavaScript would lower the carbon footprint. See the Performance tab.
Info::
Estimated 65th percentile
Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.
Top 10%
Target
Median website

1.14g

65th percentile

Cleaner than 35% of websites

✗ Above the median website

vs Median 90% more
vs Target 128% more
B
Transfer Efficiency
77% efficient
REVIEW
77% efficient
Info::
Transfer efficiency: 77%
An estimated 958 KB (23%) could be eliminated: 0 KB via better compression, 0 KB via modern image formats, 958 KB of unused JavaScript. This wasted data produces 0.27g of unnecessary CO2 per page view.
77% efficient

Total waste: 958 KB (23% of page weight)

Unused JS 958 KB

0.27g unnecessary CO2 per visit

Actual transfer 4113 KB
Theoretical minimum 3154 KB
Potential savings 958 KB (0.27g CO2)

See Deep Analysis sections above for specific optimizations.

B
Web Font Weight Variants
No detectable Google Fonts weights
REVIEW
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.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Repeat Visit Weight
100% cached
PASS
100% cached
Info::
100% reduction on repeat visits
Returning visitors download only 15 KB (vs 4113 KB first visit). 41 of 42 resources are served from browser cache, saving 1.13g CO2 per repeat visit.
Info::
Repeat visit: 0.00g CO2 (first visit: 1.14g)
First visit
4113 KB
Repeat visit
15 KB

100% reduction on repeat visits

Saving 1.13g CO2 per returning visitor

41 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.

Send Feedback