javascript - How to convert image from png to jpg in jimp? - Stack Overflow

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I read the docs:

But could not find how to convert an image from png to jpg.

I must have missed something obvious.

Using jimp on my server with Node.js.

Here's my code:

image.scaleToFit(500, 500, Jimp.RESIZE_BICUBIC).quality(60).write("./public/images/uploads/thumb"+req.file.filename, function(err) {

I read the docs: https://github./oliver-moran/jimp

But could not find how to convert an image from png to jpg.

I must have missed something obvious.

Using jimp on my server with Node.js.

Here's my code:

image.scaleToFit(500, 500, Jimp.RESIZE_BICUBIC).quality(60).write("./public/images/uploads/thumb"+req.file.filename, function(err) {

• javascript
• node.js
• image

Share Improve this question Follow edited Jul 26, 2017 at 19:54 asked Jul 26, 2017 at 19:39 anonanon 3

• Have you tried loading the image and saving it as a different format? – E_net4 Commented Jul 26, 2017 at 19:40
• What is "req.file.filename" ? Appears that you are trying to save with the original filename, and from what you said it sounds like original filename is "png" therefore you get output "png". Try adding ".jpg" extension – Edgar Zagórski Commented Jul 26, 2017 at 20:05
• 1 @EdgarZagórski That was it. – anon Commented Jul 26, 2017 at 20:22

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1 Answer 1

Sorted by: Reset to default 10

What is wrong with the example from their documentation? It kind of does what you want - converts png to jpg.

var Jimp = require("jimp");

// open a file called "lenna.png"
Jimp.read("lenna.png", function (err, lenna) {
    if (err) throw err;
    lenna.resize(256, 256)            // resize
         .quality(60)                 // set JPEG quality
         .greyscale()                 // set greyscale
         .write("lena-small-bw.jpg"); // save
});

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