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Node Jimp | invert

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The invert() function is an inbuilt function in Nodejs | Jimp that inverts an image’s colors. 

Syntax: 

invert(cb)

Parameter: 

  • cb: This is an optional parameter that is invoked when compilation is complete.

Input Images: 

Setup Environment: 

npm init -y

Install Dependencies: 

npm install jimp

Example 1: In this example, we will use invert() for inverting the image.

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(
    // invert function
    image.invert()
        .write('invert1.png');
}
 
main();
console.log("Image Processing Completed");


Output: 


Example 2: With mode and cb (optional parameters) 

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(
    // invert function using callback function
    image.invert(function (err) {
        if (err) throw err;
    })
        .write('invert2.png');
}
 
main();
console.log("Image Processing Completed");


Output: 


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


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Last Updated : 27 Mar, 2023
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