Body Scale

var config = {
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    backgroundColor: '#1b1464',
    parent: 'phaser-example',
    physics: {
        default: 'matter',
        matter: {
            debug: true
        }
    },
    scene: {
        preload: preload,
        create: create
    }
};

var game = new Phaser.Game(config);

function preload ()
{
        this.load.setBaseURL('https://cdn.phaserfiles.com/v355');
    this.load.image('blue', 'assets/sprites/columns-blue.png');
}

function create ()
{
    this.matter.world.setBounds().disableGravity();

    //  By default it will create a rectangular body the size of the texture
    var rect = this.matter.add.image(200, 50, 'blue');

    //  Just make the body move around and bounce
    rect.setVelocity(3, 1);
    rect.setAngularVelocity(0.01);
    rect.setBounce(1);
    rect.setFriction(0, 0, 0);

    rect.setInteractive();

    rect.once('pointerup', function () {

        rect.setScale(2);

    });
}