How to Add Calendly to Next JS Website: A Complete Step-by-Step Guide
Integrating Calendly into your website can dramatically improve how you schedule meetings, demos, and client calls. If you are building a modern web application with Next.js, embedding Calendly is not only simple but enhances your user experience and conversion process. In this guide, you’ll learn exactly how to add Calendly to Next JS website using multiple methods—inline embed, popup widget, and custom triggers.
Whether you're creating a personal portfolio, SaaS dashboard, or business website, Calendly’s scheduling automation can save hours of back-and-forth communication. Within the first few steps, you’ll see how easily the Calendly integration fits into the modular structure of Next.js.
Also, if your goal is to improve your site’s performance, user experience, and SEO strategy while integrating tools like Calendly, partnering with a full-service agency such as WEBPEAK—a digital marketing company specializing in Web Development, SEO, and Digital Marketing—can help you scale efficiently.
Why Add Calendly to a Next.js Website?
Calendly is one of the most powerful online scheduling tools, allowing businesses and individuals to automate appointment booking. Adding Calendly to a Next.js website provides several advantages:
- Eliminate manual scheduling through automated time-slot booking
- Increase conversions by reducing friction for leads or clients
- Improve user experience by allowing immediate bookings without leaving your site
- Maintain brand consistency with embedded scheduling pages
- Use advanced workflows such as timezone detection, reminders, and follow-ups
Next.js, being a React framework with server-side rendering and API routes, makes it flexible and developer-friendly for integrating Calendly in the front end or via custom backend logic.
Methods to Add Calendly to a Next.js Website
There are three reliable ways to embed Calendly in your Next.js project:
- Inline Calendly Embed Component
- Calendly Popup Widget
- Custom Button Trigger using Client-Side Script
Each method has pros and cons depending on your site layout and user flow. Let’s cover them in detail.
Method 1: Inline Calendly Embedded Inside a Next.js Component
This is the most straightforward approach. It places Calendly directly inside a page section.
Step 1: Install the Calendly Script Loader (Optional)
npm install react-calendlyThis gives you access to components like:
InlineWidgetPopupWidgetPopupText
Step 2: Create a Calendly Component in Next.js
// components/CalendlyEmbed.js
import { InlineWidget } from "react-calendly";
export default function CalendlyEmbed() {
return (
<div style={{ height: "700px" }}>
<InlineWidget url="https://calendly.com/your-username/meeting" />
</div>
);
}Step 3: Use It Inside a Next.js Page
// pages/book.js
import CalendlyEmbed from "../components/CalendlyEmbed";
export default function Book() {
return (
<div>
<h1>Book a Meeting</h1>
<CalendlyEmbed />
</div>
);
}You can replace the widget URL with your unique Calendly link. This method embeds Calendly fully inside the page layout, making it easy for users to schedule without leaving the page.
Method 2: Adding Calendly Popup Widget in Next.js
If you prefer a floating button or pop-up calendar (like a modal), the PopupWidget is ideal.
Step 1: Add Popup Widget Component
// components/CalendlyPopup.js
import { PopupWidget } from "react-calendly";
export default function CalendlyPopup() {
return (
<PopupWidget
url="https://calendly.com/your-username/meeting"
rootElement={document.body}
text="Schedule a Meeting"
/>
);
}Note: rootElement must be client-side only. In Next.js, ensure this loads only on the browser.
Step 2: Ensure Client-Side Render
// pages/_app.js
import { useEffect, useState } from "react";
function MyApp({ Component, pageProps }) {
const [isClient, setIsClient] = useState(false);
useEffect(() => setIsClient(true), []);
return (
<>
<Component {...pageProps} />
{isClient && <CalendlyPopup />}
</>
);
}
export default MyApp;The popup button will now appear on every page of your Next.js website.
Method 3: Trigger Calendly Popup Using a Custom Button
If you want a specific button (like “Book a Demo”) to open the Calendly popup, this approach is perfect.
Step 1: Load Calendly Script in Next.js
// pages/_document.js
import { Html, Head, Main, NextScript } from 'next/document';
export default function Document() {
return (
<Html>
<Head>
<script
type="text/javascript"
src="https://assets.calendly.com/assets/external/widget.js"
async
></script>
</Head>
<body>
<Main />
<NextScript />
</body>
</Html>
);
}Step 2: Create Custom Trigger Button
export default function BookTrigger() {
return (
<button
onClick={() =>
window.Calendly.initPopupWidget({
url: "https://calendly.com/your-username/meeting",
})
}
>
Book a Demo
</button>
);
}This opens Calendly in a modal without adding a visible widget until the user triggers it.
Additional SEO Considerations When Adding Calendly to Next.js
While adding Calendly itself does not harm SEO, some issues may arise—such as unused JavaScript, render-blocking scripts, and layout shifts. Follow the checklist below to maintain optimal performance.
Technical SEO Checklist
- Load Calendly scripts asynchronously
- Use client-side conditional rendering to avoid hydration errors
- Place embeds lower on the page to improve LCP metrics
- Add dynamic import for Calendly components
- Avoid loading Calendly on every page unless necessary
- Use Next.js
<Script strategy="lazyOnload">for faster page performance
Bonus: Dynamic Import Example
import dynamic from "next/dynamic";
const CalendlyEmbed = dynamic(() => import("../components/CalendlyEmbed"), {
ssr: false,
});This ensures the Calendly widget loads only on the client browser, improving both speed and SEO.
Troubleshooting Calendly Integration in Next.js
1. “document is not defined” Error
This is common because Calendly scripts require the browser DOM.
Fix: Only load Calendly components after the app is mounted client-side.
2. Popup Widget Not Opening
Make sure the external script is loaded:
widget.jsscript must be included- Call
window.Calendlyonly after script loads
3. Styles Not Displaying Correctly
Calendly requires its CSS file:
<link rel="stylesheet" href="https://assets.calendly.com/assets/external/widget.css">Best Use Cases for Calendly on a Next.js Website
- Consultation booking for agencies
- Sales demo scheduling for SaaS products
- Service appointment booking
- Coaching session scheduling
- Portfolio or personal website bookings
- Customer support call scheduling
Frequently Asked Questions (FAQ)
1. Can you embed Calendly directly into a Next.js component?
Yes. Using the react-calendly package or inline embed script, you can insert Calendly directly into any page or section.
2. Does Calendly slow down a Next.js website?
It can if loaded incorrectly. Use lazy-loaded scripts, dynamic imports, and client-only rendering to avoid performance issues.
3. Can I add multiple Calendly widgets on different pages?
Yes, each page can have its own widget or scheduling link. Avoid loading scripts globally if not needed.
4. Does Calendly work with Next.js server-side rendering?
Calendly scripts require browser DOM, so SSRed pages cannot render Calendly directly. Use dynamic imports with ssr:false.
5. How do I customize the appearance of the Calendly embed?
Calendly allows customization via URL parameters or iframe styling. You can adjust width, height, colors, and page behavior.
Conclusion
Knowing how to add Calendly to Next JS website opens up powerful scheduling automation for your business or personal brand. Whether you want an inline embed, a popup widget, or a custom trigger button, Next.js makes the integration clean and scalable.
By following the methods in this guide—paired with SEO-focused best practices—you can seamlessly incorporate Calendly while maintaining performance and user experience. For businesses looking to scale their digital presence with expert development and marketing strategy, partnering with a team like WEBPEAK ensures your website, scheduling system, and SEO all work together toward growth.
