I'm using nodejs to send file streams to express response

var fileReadStream = fs.createReadStream(filePath);
fileReadStream.pipe(res);

The problem is, on the front-end, the file is downloadable only with the "download", and without extension. And this makes the file unable to use (as no extension).

I'm using nodejs to send file streams to express response

var fileReadStream = fs.createReadStream(filePath);
fileReadStream.pipe(res);

The problem is, on the front-end, the file is downloadable only with the "download", and without extension. And this makes the file unable to use (as no extension).

• javascript
• node.js
• express
• stream

• 2 Adding Content-Disposition: attachment; filename="FILENAME" header to your response should do the trick. – Daniel Commented Feb 17, 2022 at 11:34

1 Answer 1

please add this header before sending the response(replace the filename according your need):

 var fileReadStream = fs.createReadStream(filePath);  
 res.setHeader('Content-disposition', 'attachment; filename=YOUR_FILE.EXTENSION');
 fileReadStream.pipe(res);