Node Jimp | Color Lighten

Introduction : The lighten modifier is an inbuilt color modifier in Nodejs | Jimp which lightens the color of an image to a given amount, ranging between 0 to 100. If 100 is provided, it will result into a transparent white image. 

Syntax:

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

Parameter:

• value – This parameter stores the amount of lightness to apply. It takes values from 0 – 100.

Input Images:

Setup Environment : 

npm init -y

Install Dependencies :

npm install jimp 

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
('https://media.geeksforgeeks.org/wp-content/uploads/20190328185307/gfg28.png');
// color function having lighten modifier
  image.color([{apply:'lighten', params: [50]}])
  .write('lighten1.png');
}

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

Output:

Example 2: 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
('https://media.geeksforgeeks.org/wp-content/uploads/20190328185333/gfg111.png');
// color function having lighten modifier
  image.color([{apply:'lighten', params: [50]}], function(err){
    if (err) throw err;
  })
  .write('lighten2.png');
}

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

Output:

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