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Node Jimp | resize
  • Last Updated : 19 Feb, 2021

Introduction 
The resize() function is an inbuilt function in Nodejs | Jimp which resizes the image to a set width and height using a 2-pass bilinear algorithm. 
Syntax: 
 

resize(w, h, mode, cb)

Parameter: 
 

  • w – This parameter stores the width of the image.
  • h – This parameter stores the height of the image.
  • mode – This is optional parameter which stores the scaling method.
  • cb – This is optional parameter which is invoked when compilation is complete.

Input Images: 
 

 



Step 1 : Setting up environment 

npm init -y

Step 2 : Install jimp

npm install jimp --save

Example 1: 
 

javascript




// npm install --save jimp
// import jimp library to the environment
var Jimp = require('jimp');
 
// User-Defined Function to read the images
async function main() {
    const image = await Jimp.read
// rotate Function having rotation as 55
    image.resize(323, 421)
    .write('resize1.png');
}
 
main();
    console.log("Image Processing Completed");

Output: 
 

Example 2: With cb (optional parameters) 
 

javascript




//npm install --save jimp
//import jimp library to the environment
var Jimp = require('jimp');
 
//User-Defined Function to read the images
async function main() {
    const image = await Jimp.read
//rotate Function having rotation angle as 99, mode and callback function
  image.resize(1024, 768, Jimp.RESIZE_BEZIER, function(err){
      if (err) throw err;
  })
      .write('resize2.png');
}
 
main();
  console.log("Image Processing Completed");

Output: 
 

Reference: https://www.npmjs.com/package/jimp
 

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