HTML canvas rotate() Method

HTML canvas scale() Method

Last Updated : 12 Jun, 2023

The HTML canvas scale() Method is used to scale the current drawing into smaller or larger size. After scaling the drawing, all the feature of drawing scaled. It will have to define before the canvas. Syntax:

context.scale( scalewidth, scaleheight )

Parameter Values:

scalewidth: It scale the width of current drawing, (1=100%, 0.5=50%, 2=200%, and so on).
scaleheight: It scale the height of current drawing, (1=100%, 0.5=50%, 2=200%, and so on)

Example 1: This example uses canvas scale() Method to increase the drawing size.

html

<!DOCTYPE html> 
<html> 

<head> 
    <title> 
        HTML canvas scale() Method
    </title> 
</head> 

<body> 
<center>
<h1 style="color:green">GeeksforGeeks</h1>
    <canvas id="GFG"
            width="500"
            height="300"> 
</canvas> 

    <script> 
        var x = 
            document.getElementById("GFG"); 
        var context = 
            x.getContext("2d"); 
        context.strokeRect(10, 10, 150, 100); 
        context.scale(2, 2);
        context.strokeRect(50, 50, 150, 100);
    </script> 
<center>
</body> 

</html>

Output: Example 2: This example uses canvas scale() Method to decrease the drawing size.

html

<!DOCTYPE html> 
<html> 

<head> 
    <title> 
        HTML canvas scale() Method
    </title> 
</head> 

<body> 
<center>
<h1 style="color:green">GeeksforGeeks</h1>
    <canvas id="GFG"
            width="500"
            height="300"> 
</canvas> 

    <script> 
        var x = document.getElementById("GFG"); 
        var context = x.getContext("2d"); 
        context.strokeRect(10, 10, 150, 100); 
        context.scale(0.5, 0.5);
        context.strokeRect(50, 50, 150, 100);
    </script> 
</center>
</body> 

</html>

Output: Supported Browsers: The browser supported by HTML canvas scale() Method are listed below:

Google Chrome
Internet Explorer 9.0 or above
Firefox
Safari
Opera

HTML canvas rotate() Method

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