javascript - How to send file stream with file name and file extension using NodeJS - Stack Overflow

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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

Share Improve this question Follow edited Feb 17, 2022 at 16:17 VLAZ 29.1k99 gold badges6363 silver badges8484 bronze badges asked Feb 17, 2022 at 11:22 M.K. MalikM.K. Malik 19311 gold badge22 silver badges1111 bronze badges 1

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

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1 Answer 1

Sorted by: Reset to default 8

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);

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