Tips & Tricks5 min read

The Ultimate Web Performance Audit Checklist for Frontend Developers

By Sayyed Abrar Akhtar • Published 2025-02-18

Actionable techniques to reduce JavaScript payload, optimize images, eliminate render-blocking CSS, and speed up TFB.

Before launching any web application, go through this high-impact performance checklist:

**Image Formats**: Convert PNGs/JPEGs to modern WebP/AVIF formats.
**Font Subsetting**: Preload critical self-hosted web fonts using `font-display: swap`.
**Bundle Analysis**: Run `@next/bundle-analyzer` or `source-map-explorer` to prune dynamic imports and duplicate npm packages.

Tags:#Performance#Web Dev#Checklist

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