Why Multiple root layouts with route groups in NextJS? - Purpose & Use Cases

The Big Idea

Discover how to effortlessly manage different page designs in one Next.js app without messy code!

The Scenario

Imagine building a website where different sections need completely different page structures, like a blog with one style and a shop with another, but you try to manage all layouts manually in each page.

The Problem

Manually repeating layout code on every page is tiring, error-prone, and makes updates a nightmare because you must change many files instead of one.

The Solution

Next.js lets you define multiple root layouts grouped by routes, so each section can have its own layout automatically applied, keeping your code clean and easy to maintain.

Before vs After

✗ Before

function BlogPage() { return <div><header>Blog Header</header><main>Content</main></div> }
function ShopPage() { return <div><header>Shop Header</header><main>Content</main></div> }

✓ After

app/(blog)/layout.js exports BlogLayout
app/(shop)/layout.js exports ShopLayout
Each page inside uses its group layout automatically

What It Enables

This makes it easy to build large apps with distinct sections, each having its own look and feel, without repeating code.

Real Life Example

A website with a marketing homepage, a user dashboard, and a blog, each with unique navigation and styles, all managed cleanly with route group layouts.

Key Takeaways

Manual layout repetition is slow and error-prone.

Route groups let you assign different root layouts per section.

This keeps code organized and easy to update.