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How to install an SSL Certificate on Node.js?

Node.js is an open-source, cross-platform, JavaScript run-time environment that executes JavaScript code outside of a browser.

It is used because of certain advantages, such as:

  • Easy scalability
  • Ease of learning
  • Simplicity
  • Unfastened source runtime habitat

How to install an SSL certificate on Node.js?

There are three basic steps if you want to install an SSL certificate on Node.js.

1. Download your SSL certificate

The first step to install your SSL certificate on Node.js is to buy one.

There are plenty of websites that you can choose from at the optimum price. The best part is that you have an option to choose from a very wide variety of SSL certificates in the market.

That said, you should purchase SSL certificate which aligns best with your business model. After you have made the purchase, there would be a document verification process by the Certificate Authority.

After the verification is complete, you will receive an email containing:

  • Intermediate certificates
  • Root certificates
  • CA bundle files

2. Create the ‘https_server.js’ file and upload SSL files

In this step, the ‘server.js’ part of the code can be renamed as per your business requirement. For example, it can be renamed as, ‘X.js.’

You can use the following codes to generate the https server, which is the ‘https_server.js’ file here:
#vim https_server.js

var https = require('https');
var fs = require('fs');
var https_options = {
key: fs.readFileSync("/path/to/private.key"),
cert: fs.readFileSync("/path/to/your_domain_name.crt"),
ca: [
https.createServer(options, function (req, res) {
res.end("Welcome to Node.js HTTPS Servern");

This is the generic code. Of course, you will have to tweak the codes a bit and tailor it as per your business requirement.

You will need to replace the following commands with pathways pertaining to your file:


It is the path of your private key file.


Here, you will need to enter the path of your SSL certificate file.


Here, you will need to provide the full path of the Certificate Authority-issued root certificate file.


This is the full path of the CA bundle file.

3. Activation of SSL certificate

This is the last step, where you will need to write the code to activate the SSL certificate on the Node.js.

Here is the simple code:

# node https_server.js

Once you run this piece of code, the SSL certificate will be set off on Node.js.

And you are ready to go!

However, just for confirmation, you could use an online SSL checker tool to check if the SSL certificate has indeed been activated.

Where to buy an SSL Certificate for Node.js?

If you are still searching for the best SSL certificate for Node.js, then you are at the right place. You will have diversified SSL products at matchless price from SSL2BUY that will bind your website with strongest security.

About the Author

Nikita Gupta

Nikita Gupta is a seasoned professional with a master's degree in Computer Applications. She brings over 10 years of profound experience to the realm of technology. Her exceptional expertise spans software security, data security, and mastery in SSL/TLS. When it comes to cutting-edge solutions for securing digital assets, Nikita is a dedicated pro.