Node Jimp | Color red

Last Updated : 25 Apr, 2019

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

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

Parameter:

value – This parameter stores the amount by which red color of the image is to be modified.

Input Images:

Example 1:

// 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 red modifier 
  image.color([{apply:'red', params: [73]}]) 
  .write('red1.png'); 
}  
  
main(); 
  console.log("Image Processing Completed"); 

Output:

Example 2: cb (optional parameters)

// 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 red modifier 
  image.color([{apply:'red', params: ['50']}], function(err){ 
    if (err) throw err; 
  }) 
  .write('xor2.png'); 
} 
  
main(); 
  console.log("Image Processing Completed"); 

Output:

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

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