Layout vs template difference in NextJS - When to Use Which

The Big Idea

Discover how layouts and templates save you from endless copy-pasting and headaches!

The Scenario

Imagine building a website where every page needs a header, footer, and sidebar. You copy and paste this structure into every page file manually.

The Problem

This manual copying is slow and risky. If you want to change the header, you must update every page separately. It's easy to miss some pages, causing inconsistent looks and bugs.

The Solution

Layouts and templates let you define common page parts once and reuse them automatically. Layouts wrap pages with shared structure, while templates define reusable page designs. This saves time and keeps your site consistent.

Before vs After

✗ Before

function Page() { return (<><Header /><Content /><Footer /></>); }

✓ After

export const layout = ({ children }) => (<><Header />{children}<Footer /></>);

What It Enables

Layouts and templates enable easy, consistent page design updates across your whole site with minimal effort.

Real Life Example

Think of a newspaper: the header with the logo and navigation stays the same, but each article uses a template for its unique content. Changing the header updates all pages instantly.

Key Takeaways

Manual page structure copying is slow and error-prone.

Layouts wrap pages with shared parts like headers and footers.

Templates define reusable page designs for consistency and speed.