Guides · Technology

Frontend Performance Audit Basics

Run a quick web perf audit

This guide covers using Lighthouse and browser devtools to measure LCP, CLS, and TTI, identify bloated assets, and prioritize fixes like code splitting and image optimization.

web performance
lighthouse
lcp
cls
tti

Measure core metrics

Run Lighthouse; capture LCP, CLS, FID/INP, and total blocking time.

Find heavy assets

Audit bundle size, unused JS/CSS, and unoptimized images or fonts.

Prioritize fixes

Address biggest wins first: image compression, lazy loading, code splitting, critical CSS.

Retest and track

Re-run tests after changes; set budgets in CI to prevent regressions.

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