Nodejs s3 download file base64

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Learn more. Trying to download a file from aws s3 into nodejs writeStream Ask Question. Asked 5 years, 6 months ago. Active 3 years, 9 months ago. Viewed 13k times. Is the file closed before the write is finished? Improve this question. Nathan Nathan 5, 10 10 gold badges 46 46 silver badges 99 99 bronze badges.

Add a comment. Active Oldest Votes. Improve this answer. KibGzr KibGzr 1, 10 10 silver badges 12 12 bronze badges. For a smaller file, both methods are fine. In general, I recommend to use upload.

In this example, we are using the async readFile function and uploading the file in the callback. As the file is read, the data is converted to a binary format and passed it to the upload Body parameter.

To download a file, we can use getObject. The data from S3 comes in a binary format. In the example below, the data from S3 gets converted into a String object with toString and write to a file with writeFileSync method. Alternatively, you can create the stream reader on getObject method and pipe to a stream writer as described here.

If you want to do it with Node. Here is the quick Node.