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Node Jimp | Crop

The crop() function is an inbuilt function in Nodejs | Jimp which is used to crop the image within specified co-ordinates and dimensions. 

Syntax:

crop( x, y, w, h, cb )

Parameter:

  • x: This parameter stores the x co-ordinate of cropping.
  • y: This parameter stores the y co-ordinate of cropping.
  • w: This parameter stores the width of the cropping image.
  • h: This parameter stores the height of the cropping image.
  • cb: This is an optional parameter that is invoked when compilation is complete.

Input Images: 

 

Example 1: 

javascript




// npm install --save jimp
// import jimp library to the environment
const Jimp = require('jimp');
 
// User-Defined Function to read the images
async function main() {
    const image = await Jimp.read('../gfg.png');
    // crop function having crop co-ordinates
    // along with height and width
    image.crop(10, 10, 150, 120)
        .write('crop1.png');
}
 
main();
console.log("Image Processing Completed");


Output: 

 

Example 2: With cb (optional parameter) 

javascript




// npm install --save jimp
// import jimp library to the environment
const Jimp = require('jimp');
 
// User-Defined Function to read the images
async function main() {
    const image = await Jimp.read('../gfg1.png');
    // crop function using callback function
    image.crop(20, 20, 100, 100, function (err) {
        if (err) throw err;
    })
        .write('crop2.png');
}
 
main();
console.log("Image Processing Completed");


Output:

  

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

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