{"id":7251,"date":"2026-01-08T11:02:52","date_gmt":"2026-01-08T11:02:52","guid":{"rendered":"https:\/\/www.hostinger.com\/support\/?p=7251"},"modified":"2026-09-29T03:41:04","modified_gmt":"2026-09-29T03:41:04","slug":"how-to-add-environment-variables-during-node-js-application-deployment","status":"publish","type":"post","link":"https:\/\/www.hostinger.com\/support\/how-to-add-environment-variables-during-node-js-application-deployment\/","title":{"rendered":"How to add environment variables during Node.js application deployment"},"content":{"rendered":"

When deploying a Node.js application<\/a> on Hostinger, you can configure environment variables<\/strong> as part of the deployment process. Environment variables are commonly used to store sensitive data and configuration values such as database credentials, API keys, and application settings.<\/p>

Hostinger detects the environment variable names your application requires directly from your source code and prompts you to enter their values during deployment. You can also add variables manually or import them from a .env file in the same step.<\/p>

Before you start<\/h3>

Make sure you know which environment variables your application requires. If using a .env file, ensure it follows the correct format (for example: KEY=value).<\/p>

Add environment variables during deployment<\/h2>
    \n
  1. Start the Node.js application deployment process.
    \n\"Hostinger<\/li>\n
  2. At the Review build settings<\/strong> step, check the Environment variables<\/strong> card. If Hostinger detected variables your application requires, the card shows Action required<\/strong> and the number of keys needing values.<\/li>\n
  3. Click Edit<\/strong> to open Set environment variables<\/strong>.
    \n\"\"<\/li>\n
  4. Enter a value for each detected key.<\/li>\n
  5. To add a variable Hostinger didn’t detect, click Add more<\/strong>. To bring in values from a .env file instead, click Import .env<\/strong>.
    \n\"\"
    \nYour .env file should follow this format:
    \nDATABASE_URL=mysql:\/\/user:password@host:port\/database
    \nAPI_KEY=your_api_key_here
    \nNODE_ENV=production<\/li>\n
  6. Review the key-value pairs, then click Finish<\/strong> to save them.<\/li>\n
  7. Click Deploy<\/strong> to continue.<\/li>\n<\/ol>

    NOTES<\/strong><\/p>