javascript - How to resize image in Node js

Question

I need to resize my images before I upload them to s3 (amazon). I tried this function but it's not working.

Here is the function that uploads the image.

My file name is: beach_life-normal.jpg

I tried this new code but it still doesn't work!!!

This is my code:

var AWS = require('aws-sdk'),
fs = require('fs');
var express = require("express");
var app = express();
var im = require('imagemagick');



// For dev purposes only
AWS.config.update({ accessKeyId: '', secretAccessKey: '' });

// Read in the file, convert it to base64, store to S3
var fileStream = fs.createReadStream('beach_life-normal.jpg');
fileStream.on('error', function (err) {
  if (err) { throw err; }
});  
fileStream.on('open', function () {
  var s3 = new AWS.S3();

im.resize({
  srcPath: 'beach_life-normal.jpg',
  dstPath: 'beach_life-normal-small.jpg',
  width:   256

});

  s3.putObject({
    Bucket: 'adinoauploadefile',
    Key: 'beach_life-normal.jpg',
    Body: fileStream
  }, function (err) {
    if (err) { throw err; }
  });

});

Answer 1

In your example you're saving the image to S3 (s3.putObject) before resizing it (im.resize). Move the resize function before the put.

You're also not passing the image to the resize function; you'll need something like

im.resize(fileStream, { // pass in the image
      height:100,
      width:   200
 }, function(err, stdout, stderr){
      if (err) throw err;
      console.log('resized image to fit within 200x200px');
 });

Check the docs for the library you're using for the correct syntax.