Performance & Reliability

Build discipline and ruthless measurement. Below are production scores, budgets, and live vitals from your device.

Runtime & Build

Next.js (App Router) + TailwindCSS.
Images via next/image (optimized & responsive).
CI: lint, unit tests (Vitest), and e2e (Playwright).
Accessibility: keyboard nav, skip-nav, contrast checks.

Budgets (home & playground)

LCP ≲ 2.5 s on a typical laptop.
CLS < 0.1 (no unexpected layout movement).
Initial JavaScript ≈ 180 kB for first view.
Interactions respond in < 200 ms in the playground.

JS payload (kB)

▼ 29kB

181kB

Last 5 deploys

Median LCP (ms)

▼ 640ms

2210ms

Synthetic desktop

Lighthouse-tested on every PR

Lighthouse CI runs against five routes (/, /about, /research, /publications, /contact) on every push tomain and on every pull request. The build fails if any category drops below the thresholds below. Configuration lives inlighthouserc.json at the repo root.

≥ 90

Performance

≥ 95

Accessibility

≥ 90

Best Practices

≥ 95

SEO

Reports upload to temporary public storage; the URL is in the GitHub Action log for each run.

Live Core Web Vitals (this device)

LCP

—ms

Largest Contentful Paint

CLS

Cumulative Layout Shift

INP

—ms

Interaction to Next Paint

Values update in real time as you interact. Supports modern browsers; gracefully degrades where PerformanceObserver isn’t available.

Test status

Unit (Vitest): core utilities pass.
E2E (Playwright): smoke paths—navigation, theme toggle, preview drawer.
CI: GitHub Actions runs build + tests on main before deploy.