Node Jimp | Color blue

Last Updated : 3 Apr, 2023

The xor modifier is an inbuilt color modifier in Nodejs Jimp which modifies blue components of the given image by a given amount.

Syntax:

image.color([
      { apply: 'green', params: value }
]);

Parameter:

  • value: This parameter stores the amount by which the blue color of the image is to be modified.

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(
'https://media.geeksforgeeks.org/wp-content/uploads/20190328185307/gfg28.png');
    // color function having blue modifier 
    image.color([{ apply: 'blue', params: [73] }])
        .write('blue1.png');
}

main();
console.log("Image Processing Completed");

Output:

  

Example 2: 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(
'https://media.geeksforgeeks.org/wp-content/uploads/20190328185333/gfg111.png');

    // color function having blue modifier 
    image.color([{ apply: 'blue', params: ['50'] }], function (err) {
        if (err) throw err;
    })
        .write('blue2.png');
}

main();
console.log("Image Processing Completed");

Output: 

 

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

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