Vitals Lab

A concept build created to demonstrate website performance optimization. Vitals Lab is a fictional brand, so there is no client and no real-world results — it exists to show the design, interaction and engineering approach in a working, clickable site.

Slow sites are hard to fix when you don't know which metric is to blame.

Design & development — responsible for planning, building and shipping the product across the interface, backend and data layer.

A diagnostic tool: pick what you notice and get prioritised fixes for LCP, INP and CLS, using Google's published thresholds.

• Symptom-based diagnosis
• Prioritised recommendations
• Published metric thresholds
• No fabricated benchmark numbers

• React
• TypeScript
• Core Web Vitals
• Tailwind CSS

1. 1

   Define the brief

   Chose a realistic scenario for the service and defined what the product needs to do.

2. 2

   Design the interface

   Set a distinct visual direction, type scale and responsive layout.

3. 3

   Build it

   Implemented in React and TypeScript with accessible, keyboard-friendly interactions.

4. 4

   Polish and test

   Checked responsive behaviour, focus states and empty or error states.

• Explain the metric before recommending the fix.
• Prioritise by likely impact.
• Never invent performance results.

A complete, working concept demo you can open and use — built to show the approach, not to claim client results.