Node Jimp | invert

Introduction
The invert() function is an inbuilt function in Nodejs | Jimp which inverts an image’s colors.
Syntax:

invert(cb)

Parameter:

  • cb – This is optional parameter which is invoked when compilation is complete.

Input Images:

Example 1:



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

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Output:




Example 2: With mode and cb (optional parameters)













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// 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'); 


// invert function using callback function 


  image.invert(function(err){ 


    if (err) throw err; 


  }) 


  .write('invert2.png'); 


} 


  


main(); 


  console.log("Image Processing Completed"); 



















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Output:



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





    

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