This is a work in progress, and not quite ready for primetime
Actual and perceived web page speed optimization is the one factor that always works across different industries.
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Google Developer: Speed
Google Web Vitals
WebPageTest
Yellow Lab
SSL Labs
Request Map Generator
Google Pagespeed Insights
Akamai Page Integrity Manager
SpeedCurve
Section508.gov
W3 WCAG 2.1 Checklist
18F Accessibility Guide