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Node(Express.js) Integration Guide

Improve SEO for dynamic front-ends by serving pre-rendered HTML to search engine bots using Express.js middleware.

 
If you're using Node with Express.js as your main web server, integrating Prerender.io can significantly enhance your site's SEO and load times for bots. This integration enables search engines to receive fully rendered HTML for JavaScript-heavy pages, helping them index content more accurately.
 

Important:
This integration can not be installed directly into a React,Angular or Vue project.
Only use this integration if Express is handling every incoming connection and not just API calls.

This integration uses the prerender-node middleware to detect bots and route them through Prerender’s rendering service.

 

Video guide:


Prerender token 

The location of the Prerender token has changed. You can find it under the Security and Access menu under Prerender Token.

 

Text guide:


View source on GitHub

1. Install the prerender-node Middleware

Open a terminal and run the following command in your Express.js project directory:

npm install prerender-node --save

 

2. Add Prerender Middleware to Your App

In your main server file (commonly app.js or server.js), add the following code before any route handlers:

app.use(require('prerender-node').set('prerenderToken', 'YOUR\_TOKEN'));

Replace 'YOUR_TOKEN_HERE' with your actual Prerender Token, found in the Prerender.io dashboard under Security and Access menu.

 

3. Restart Your Application

After saving your changes, restart your Express.js app so the middleware takes effect:

npm start

Or, if you're using a process manager like pm2:

pm2 restart your-app-name

 

 

Verify Your Installation

After integration, it’s important to verify that everything is working as expected. We’ve provided an easy-to-follow guide to help you test your setup and confirm that Prerender is functioning properly.

 

Is the Prerender integration working on other pages?

Test if the Prerender integration works on the other pages based on this guide: Verify the integration

If you don't see the Prerender headers / IDs, then the Integration is not working, which might be why the other URL is not cached

 

Getting an Error?

If you see the message "Prerender Integration Not Detected," you can refer to the troubleshooting guide here to help resolve the issue.

 

Expert Assistance

For those who need additional help or want to ensure a smooth and secure launch, we offer a specialized package:

Kickstart Package

Price: $800 (one-time payment)

This one-time package empowers you with expert setup and configuration, ensuring a smooth and secure launch.

Features:

  • Three setup and configuration sessions with our experts
  • Onboarding assistance
  • Security assessment

To learn more about this package or to purchase, visit the Packages section under the Billing menu in your Prerender dashboard. 


 

Get Support

If you're still encountering issues after implementing Prerender:

  • Review your implementation against our documentation
  • Contact our support team:

To help us resolve your issue as quickly as possible, please gather and include any relevant information, such as:

  • Error messages you're seeing
  • Steps you've already taken to troubleshoot
  • Screenshots or screen recordings (if applicable)

Providing these details up front will help our team diagnose the problem more efficiently and get you back on track faster.

 

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