15 topic guides across 6 categories. Use them alongside the performance standard and the performance review checklist on meaningful changes.
Metrics and budgets(5)
Core Web Vitals, budgets, planning, and monitoring — measurable constraints before users feel regressions.
Assets and delivery(3)
Fonts, images, CSS weight, and lazy loading — what ships on first load and what waits.
JavaScript and rendering(4)
Bundles, hydration, islands, and rendering strategy — less script, clearer delivery choices.
Backend and infrastructure(1)
Time to first byte and server-side impact on what the frontend can show quickly.
Third parties(1)
Embeds, tags, and governance — external scripts that must justify their cost.
Observability(1)
Production signals, workflows, and dashboards — problems visible before trust erodes.