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Fabric.js | Circle scaleX Property

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  • Last Updated : 13 May, 2020
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In this article, we are going to see how to set the default horizontal scale of a canvas circle using FabricJS. The canvas means the circle is movable and can be stretched according to requirement. Further, the circle can be customized when it comes to initial stroke color, fill color, stroke width, or radius.

Approach: To make it possible, we are going to use a JavaScript library called FabricJS. After importing the library using CDN, we will create a canvas block in the body tag that will contain our circle. After this, we will initialize instances of Canvas and Circle provided by FabricJS and set default horizontal scale of the circle using scaleX property and render the Circle on the Canvas as given in the below example.


    radius: number,
    scaleX: number

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

  • radius: It specifies the radius of circle.
  • scaleX: It specifies the default horizontal scale.

Example: This example uses FabricJS to set default horizontal scale of a canvas circle.

<!DOCTYPE html>
        Fabric.js | Circle scaleX Property
    <!-- FabricJS CDN -->
    <script src=
    <canvas id="canvas" width="600" height="200" 
        style="border:1px solid #000000">
        // Initiate a Canvas instance
        var canvas = new fabric.Canvas("canvas");
        // Initiate a Circle instance
        var circle = new fabric.Circle({
            radius: 50,
            scaleX: 2
        // Render the circle in canvas


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