How to upload images on AWS S3 using Node.js

If you are a developer working with Node.js and AWS, you might need to upload images to an AWS S3 bucket. In this article, we will go through the process of doing this using Node.js.

Setting up AWS S3

Before we can start uploading images to AWS S3, we need to set up an S3 bucket and obtain our AWS credentials. If you haven’t done this already, head over to the AWS Management Console and create a new S3 bucket. Make sure to note down your Access Key ID and Secret Access Key, as we will need them in our Node.js application.

Installing the AWS SDK for Node.js

Next, we need to install the AWS SDK for Node.js using npm. Open your terminal and run the following command:

npm install aws-sdk

Writing the Node.js code

Now that we have our AWS credentials and the AWS SDK installed, we can start writing the code to upload images to S3. Below is a basic example of how to achieve this:

    const AWS = require('aws-sdk');
    const fs = require('fs');

    const s3 = new AWS.S3({
      accessKeyId: 'YOUR_ACCESS_KEY_ID',
      secretAccessKey: 'YOUR_SECRET_ACCESS_KEY'
    });

    const uploadImage = (fileName) => {
      const fileContent = fs.readFileSync(fileName);

      const params = {
        Bucket: 'your-bucket-name',
        Key: 'path/to/uploaded/image.jpg',
        Body: fileContent
      };

      s3.upload(params, (err, data) => {
        if (err) {
          console.error(err);
        }
        console.log(`File uploaded successfully. File location: ${data.Location}`);
      });
    };

    uploadImage('path/to/local/image.jpg');
  

Testing the upload

Save the above code to a JavaScript file, replacing ‘YOUR_ACCESS_KEY_ID’, ‘YOUR_SECRET_ACCESS_KEY’, ‘your-bucket-name’, and ‘path/to/local/image.jpg’ with your actual AWS credentials and file path. Then run the script using Node.js:

node uploadImage.js

After running the script, you should see a message indicating that the file was uploaded successfully, along with the location of the uploaded file in your S3 bucket.

Conclusion

Uploading images to AWS S3 using Node.js is a common task for web developers working with AWS. With the AWS SDK for Node.js, this process becomes relatively simple and can be integrated into your web applications with ease.