How To _best_ Download File From S3 Bucket Using Angular May 2026

For security, never store AWS secret keys in your Angular code. Instead, your Angular app should request a presigned URL from your backend (e.g., Node.js, Python, or .NET).

After receiving the binary data (Blob), use a hidden anchor tag to trigger the "Save As" dialog. typescript how to download file from s3 bucket using angular

Once your backend provides the URL, you can use Angular's HttpClient to fetch the file as a Blob . This allows you to handle progress or process the file before the user saves it. typescript For security, never store AWS secret keys in

// Node.js Backend Example import { getSignedUrl } from "@aws-sdk/s3-request-presigner"; import { S3Client, GetObjectCommand } from "@aws-sdk/client-s3"; const client = new S3Client({ region: "us-east-1" }); const command = new GetObjectCommand({ Bucket: "my-bucket", Key: "file.pdf" }); const url = await getSignedUrl(client, command, { expiresIn: 3600 }); // Valid for 1 hour Use code with caution. 2. Angular Service Implementation typescript Once your backend provides the URL, you