Website Performance Playbook with Shilpe Saxena

Stop guessing. Start fixing.

Slow LCP? Janky mobile scrolling? iPhones crashing with a blank white screen? Lighthouse scores that change every run?

I spent 6 months fixing these problems on a production e-commerce site (React & Next.js, ~1 million monthly visits, 10,000+ products). This playbook is everything I learned, in one place, so you can skip the trial and error.

What’s inside (53 pages)

• Symptom → cause → fix map, so you go straight to your problem
• How to measure correctly, so you don’t chase fake regressions
• LCP, INP, CLS, FCP and TTFB fixes with copy-paste code
• Images, fonts, JavaScript bundles and third-party scripts (including deferring GTM)
• Caching and server-side fixes that cut TTFB
• iOS Safari: memory crashes, auto-zoom, scroll lock and viewport bugs
• Real before/after numbers (e.g. INP 320 ms → 144 ms, 32 high-priority images → 4)
• Mistakes to avoid, a tools cheat sheet and helper functions
• A pre-release performance checklist you can reuse on every PR

Who it’s for

Frontend developers working with React or Next.js, freelancers running performance audits, and anyone handed a “fix our Core Web Vitals” ticket.

What you get

• PDF (53 pages) plus an editable Word version
• Free updates to future editions

Questions? DM me on Instagram @shilpe.codes.