Performance Audit Kit

A reusable, developer-friendly workflow to audit Core Web Vitals and ship improvements with confidence. Use it to identify bottlenecks, prioritize fixes, and track before/after results for LCP, CLS, and INP.

What you get How it works
  • ⚡ LCP/CLS/INP audit checklist
  • 🧾 Report template (evidence + fixes)
  • 🧪 Before/after tracking plan
  • 🧱 Repeatable workflow for teams

Best for: blogs, marketing sites, product pages, dashboards, and any site where performance affects UX and conversions.

Typical results depend on site architecture, but this kit helps you reliably find the highest-impact improvements.

What you get

Everything you need to run audits consistently across pages and releases.

1) Core Web Vitals checklist

A prioritized checklist for LCP, CLS, and INP with the most common root causes.

  • LCP
  • CLS
  • INP

2) Audit report template

Document findings with evidence, reproduce steps, and track changes by route.

  • Evidence
  • Priorities
  • Rollout

3) Rollout & tracking plan

Ship changes safely and compare before/after results using consistent metrics.

  • Before/After
  • Regression
  • Monitoring

Bonus ideas to include (optional)

  • Route list: top pages by traffic (or top revenue pages)
  • Performance budget: max JS, max image bytes, max LCP target per template
  • “Definition of done” for performance fixes

If you want, I can also generate the actual report template in Markdown for you.

How it works

A simple workflow you can repeat every month or every release.

Step 1 — Baseline

Measure performance with lab tools (debug) and field metrics (validate). Pick top pages first.

Output: baseline snapshot

Step 2 — Root cause

Identify the LCP element, CLS sources, and long tasks that hurt INP. Collect evidence and screenshots.

Output: findings list

Step 3 — Prioritize

Rank fixes by impact and effort. Start with quick wins that improve the worst pages first.

Output: prioritized backlog

Step 4 — Ship safely

Deploy changes in small batches. Avoid regressions with a checklist and rollback plan.

Output: controlled release

Step 5 — Validate

Compare before/after results. Keep a log per route and watch for regressions.

Output: measurable improvement

Step 6 — Repeat

Turn performance into a process. Re-run audits regularly and keep budgets stable.

Output: long-term stability

Related reading: Core Web Vitals quick wins • Image optimization

Quick start

If you only have 60 minutes, do this.

  1. Pick 3 pages that matter (homepage + top landing page + top product/content page).
  2. Run a baseline Lighthouse + record LCP/CLS/INP observations.
  3. Find the LCP element (often hero image/text) and remove obvious blocking.
  4. Fix CLS by reserving space for images/embeds and stabilizing fonts.
  5. Fix INP by reducing long tasks and deferring non-critical JS.
  6. Ship the smallest safe change, then measure again.

What it helps you improve

Clear outcomes and where you’ll see the biggest wins.

LCP (Loading)

Hero image sizing, preload strategy, render-blocking CSS/JS, and faster delivery.

CLS (Stability)

Reserved space for images/ads/embeds, stable fonts, and avoiding late UI inserts.

INP (Responsiveness)

Reduce long tasks, defer heavy scripts, lazy-load expensive components, lighter handlers.

FAQ

Answers to common questions about audits and tracking.

What does the kit include?

Core Web Vitals checklist, report template, and rollout/tracking plan for before/after results.

Who is this for?

Developers and teams who want a repeatable process to improve performance and avoid regressions.

Does this guarantee better scores?

No guarantees, but it helps you find bottlenecks faster and measure improvements consistently.

How do I track improvements?

Record a baseline, ship small changes, compare lab + field metrics, and keep a per-route change log.

Want the templates?

If you want, I can generate: (1) the full audit checklist, (2) a Markdown report template, and (3) a tracking table you can paste into Notion/Sheets.

Request templates Read quick wins

Email: hello@olamisan.com