My React App Got 3x Faster Just by Switching to Vite — No Code Changes Needed

In 30 minutes I made my app go 3X faster while developing

I’m not usually the kind of person who jumps on hype trains. When I first heard everyone buzzing about Vite, I just rolled my eyes as to who is comfortable in all new technologies until it settles in the market.

I thought, “How much better could it be?” Spoiler: I was very wrong.

I’d been working on a React app for years. Nothing fancy — just a dashboard with charts, models, and some API calls.

But the moment the project grew a bit, my dev server slowed down.

A hot reload was taking forever, re-installing node_modules was taking hell lot of time and I started avoiding making changes because of the lag. That’s when I got to know how one of my friends was using Vite and He asked me —
“You’re still using CRA(Create React App)?”

CRA, You Were Great… But It’s Time to Move On

I had started the project with Create React App (CRA) — like many of us do. It’s familiar, it’s beginner-friendly, and it just works fine.

But lately, it had started to feel… heavy. Build times were slow, reloading felt sluggish, and I was spending more time waiting than building. It was not as quick as it used to be or maybe I felt that with my application😅

That’s when I gave Vite a shot. And holy WOW🤩.

The Migration Took Me around 20–25 Minutes

I was honestly expecting pain. But the switch was smoother than I imagined.

I installed Vite, updated my entry point and a couple of config files, and boom — the dev server running in under a second.
That’s it.

No code-level changes.
No rewriting components.
No rethinking architecture.

Just some configs, imports and tests configs update

The same app, but the experience was night and day.

So, What Makes Vite So Fast?

Here’s the thing — Vite doesn’t bundle everything upfront like CRA. It serves files on demand and leverages native ES modules. Translation? Your app boots up faster, and changes reflect instantly.

Hot Module Replacement (HMR) is almost instant. It doesn’t reload the entire page. Just the part you’re working on. I didn’t realize how much I needed that until I got it. It made the development experience smoother.

Should You Switch Too?

If your React app feels sluggish or you’re stuck on CRA, the answer is: yes.
Even if you’re working on a mid-level project, the switch is worth it. Especially if you’re in active development mode and your time matters (spoiler: it always does).

It’s like moving from a dusty old bike to a sleek electric one, a shiny one which you don’t have to start with a kick every time. You’re still pedalling, but everything feels easier.

Downside of Vite

Everything is roses in Vite but there are some thorns as well, one of them is your app might perfectly work in development but not in production the reason is, Vite use esbuild for development and Rollup for production. This manual testing is an important aspect to make sure everything works smoothly.

Though this will be a rare case still there are some chances of the same happening.

Final Thought

Sometimes, performance boosts don’t require heroic refactors or deep dives into code.
Sometimes, you just need to pick a better tool.

And for me, switching to Vite was that tool. Zero code changes. Triple the speed. And a much happier dev experience.

My React App Got 3x Faster Just by Switching to Vite — No Code Changes Needed