Creating a new Vue project - Performance Optimization Steps

Performance: Creating a new Vue project

MEDIUM IMPACT

This affects the initial page load speed and bundle size of the Vue app.

Setting up a new Vue project for fast loading

Vue

npm init vue@latest
# Select minimal features: no router, no state management, no testing
npm install
npm run dev

Reduces bundle size by excluding unused features, speeding up initial load and rendering.

📈 Performance Gainsaves 150kb+ in bundle, reduces LCP by 300-500ms

Setting up a new Vue project for fast loading

Vue

npm init vue@latest
# Choose default options with all plugins and features enabled
npm install
npm run dev

Including all optional plugins and features by default adds unnecessary code and increases bundle size.

📉 Performance Costadds 200kb+ to bundle, blocks rendering longer during initial load

Performance Comparison

Pattern	DOM Operations	Reflows	Paint Cost	Verdict
Default full feature setup	Moderate DOM nodes	Multiple reflows during hydration	High paint cost due to large bundle	[X] Bad
Minimal feature setup	Minimal DOM nodes	Single reflow after hydration	Lower paint cost with smaller bundle	[OK] Good

Rendering Pipeline

Creating a new Vue project sets up the JavaScript bundle and HTML structure that the browser loads and renders. The size and complexity of the generated bundle affect how long the browser spends parsing, compiling, and executing scripts before painting the page.

→Network

→Script Parsing

→Style Calculation

→Layout

→Paint

⚠️ BottleneckScript Parsing and Execution due to large bundle size

Core Web Vital Affected

LCP

This affects the initial page load speed and bundle size of the Vue app.

Optimization Tips

1Choose minimal features during Vue project setup to reduce bundle size.

2Avoid adding unnecessary plugins or dependencies initially.

3Use browser DevTools Network tab to monitor bundle size and load times.

Performance Quiz - 3 Questions

What is a key performance benefit of selecting minimal features when creating a new Vue project?

A Smaller JavaScript bundle size leading to faster page load

B More DOM nodes created for better UI

C Longer script parsing time for better debugging

D Increased CSS complexity for richer styles

DevTools: Network

How to check: Open DevTools > Network tab, reload the page, and observe the size of the main JavaScript bundle file.

What to look for: Look for smaller JS bundle sizes and faster load times indicating better performance.