How to Add a Floating CTA Button to a Next.js App

Next.js uses a root layout file that wraps every page — making it the perfect place to add a site-wide floating CTA button. Design your button with the generator, export the code, and drop it into your layout in under a minute.

Why Add a CTA Button to Next.js?

Next.js apps often serve as the frontend for SaaS products, marketing sites, and e-commerce stores. The root layout pattern means a single component addition gives you site-wide coverage. Because Next.js renders on the server by default, the CTA button appears in the initial HTML payload — no layout shift, no flash of unstyled content, and no client-side JavaScript overhead.

Step-by-Step Instructions

Design your CTA button

Open the CTA Button Generator and customize your button using the visual editor. Pick colors, position, animation, hover effects, icon, and font. The live preview updates in real time so you see exactly what your visitors will get.

Export your code

When you are happy with the design, click "Get Code" to export a clean HTML + CSS snippet. The code is lightweight, has zero dependencies, and works on any website.

Create a CtaButton component

Create a new file at components/cta-button.tsx. Paste the exported HTML converted to JSX and include the styles. Since the button is purely presentational, it can be a server component (no "use client" needed).

export function CtaButton() {
  return (
    <>
      <style>{`/* paste your CTA styles here */`}</style>
      {/* paste your CTA HTML here, converted to JSX */}
    </>
  );
}

Add it to your root layout

Open app/layout.tsx and render the <CtaButton /> component inside the <body> tag, after your main content. This ensures it appears on every page.

import { CtaButton } from "@/components/cta-button";

export default function RootLayout({ children }) {
  return (
    <html lang="en">
      <body>
        {children}
        <CtaButton />
      </body>
    </html>
  );
}

Run your dev server and verify

Start your Next.js dev server with npm run dev (or bun dev, pnpm dev). Navigate to any page and confirm the floating CTA button appears in the correct position.

Best Practices for Next.js

Add the button component to app/layout.tsx (App Router) for site-wide coverage, or pages/_app.tsx if using the Pages Router.
Keep the component as a server component (no "use client" directive) since it's pure HTML + CSS with no interactivity.
Use Next.js Link component for the button's href if you're linking to an internal page to get client-side navigation.
If you need different buttons on different routes, use route groups or conditional rendering based on the pathname.

Ready to build your button?

Design it visually, export clean code, and paste it into your site.

Open the Generator

Frequently Asked Questions

Does the CTA button work with both the App Router and Pages Router?

Yes. For the App Router, add it to app/layout.tsx. For the Pages Router, add it to pages/_app.tsx or pages/_document.tsx.

Will it affect server-side rendering?

No. The button is pure HTML + CSS with no client-side JavaScript, so it renders on the server just like any other element.

Can I use Next.js middleware to show the button conditionally?

Middleware runs on the edge and can't modify component rendering directly. Instead, use conditional logic in your layout component based on the pathname from headers or params.

Does the button add to my JavaScript bundle size?

No. As a server component with no client-side logic, it contributes zero bytes to your JavaScript bundle. It's rendered as static HTML.

How to Add a CTA Button to Next.js