Technical guide • 16 min read

Ecommerce Frontend Performance Guide

Revenue-linked metrics

Optimize PLP and PDP LCP first — they drive organic and paid traffic. Checkout INP second — friction here is pure revenue loss.

Image policy: WebP/AVIF, responsive srcset, lazy below fold. Third-party scripts (pixels, chat) deferred or tag-managed.

Cache product JSON at edge; personalize cart client-side or via lightweight API. See bundle reduction case study: 4.2MB to 1.1MB.

Common stack — Hydrogen or custom Storefront API with Next.js on Vercel/AWS.

By Gaurav Mithas, Founder & Solutions Architect at Async Works.

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