Node.js GM resize() Function

The resize() function is an inbuilt function in the GraphicsMagick library which is used to resize an image. The function returns the true value on success.

Syntax:

raise( width, height )

Parameters: This function accepts two parameters as mentioned above and described below:

• width: This parameter is used to specify the width of the image.
• height: This parameter is used to specify the height of the image.

Return Value: This function returns the GraphicsMagick object.

Example 1:

// Include gm library
var gm = require('gm');

// Import the image
gm('1.png')

// Invoke resize function with 1024*768
.resize(1024, 268)

// Process and Write the image
.write("resize1.png", function (err) {
  if (!err) console.log('done');
});

Output:

Example 2:

// Include gm library
var gm = require('gm');

//Import the image
gm(600, 300, 'white')

// set the color for the stroke
.stroke("green", 3)

// Set the font
.font("Helvetica.ttf", 60)

// Call to drawText Function
.drawText(100, 280, "GeeksforGeeks!")

// Invoke roll function
.resize(200, 150, '%')

// Process and write the image
.write("resize2.png", function (err) {
  if (!err) console.log('done');
});

Output:

Reference:

• http://www.graphicsmagick.org/GraphicsMagick.html#details-resize
• https://www.npmjs.com/package/gm