Node Jimp | invert
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( 'https://media.w3wiki.net/wp-content/uploads/20190328185307/gfg28.png' ); // 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( 'https://media.w3wiki.net/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" ); |
Output:
Reference: https://www.npmjs.com/package/jimp