Creating a Remix project - Performance Optimization Steps

Performance: Creating a Remix project

MEDIUM IMPACT

This affects the initial page load speed and bundle size by determining how the project is structured and dependencies are included.

Setting up a new Remix project for fast initial load

Remix

npx create-remix@latest
# Select minimal features and only needed adapters
# Keep dependencies lean and add only what is necessary

Smaller bundle size and fewer render-blocking scripts speed up initial page load and LCP.

📈 Performance Gainsaves 150kb+ bundle size, reduces blocking time by 200ms+

Setting up a new Remix project for fast initial load

Remix

npx create-remix@latest
# Choose all optional features including heavy UI libraries and unnecessary adapters
# Add many large dependencies before first build

Including unnecessary dependencies and features increases bundle size and slows down initial page load.

📉 Performance Costadds 200kb+ to bundle, blocks rendering for 300ms+ on slow networks

Performance Comparison

Pattern	DOM Operations	Reflows	Paint Cost	Verdict
Minimal Remix project setup	Low - minimal nodes	Single reflow on load	Low paint cost	[OK] Good
Remix project with heavy dependencies	High - many nodes from UI libs	Multiple reflows due to complex styles	High paint cost	[X] Bad

Rendering Pipeline

Creating a Remix project sets up the initial JavaScript and CSS bundles that the browser downloads and processes. The size and complexity of these bundles affect the Style Calculation, Layout, and Paint stages.

→Style Calculation

→Layout

→Paint

→Script Evaluation

⚠️ BottleneckScript Evaluation and Style Calculation due to large bundles and complex styles

Core Web Vital Affected

LCP

This affects the initial page load speed and bundle size by determining how the project is structured and dependencies are included.

Optimization Tips

1Choose only necessary dependencies when creating a Remix project to keep bundles small.

2Avoid adding heavy UI libraries at project start to reduce initial load time.

3Use minimal routing and features initially to speed up LCP.

Performance Quiz - 3 Questions

What is a key factor that affects the initial load speed when creating a Remix project?

A The number and size of dependencies included at setup

B The color scheme chosen for the project

C The font style used in the project

D The name of the project folder

DevTools: Performance

How to check: Open DevTools > Performance tab > Record page load > Look at scripting and rendering times

What to look for: Long scripting tasks and large style recalculations indicate heavy bundles slowing LCP