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How to make controlling corners opaque in text canvas using Fabric.js ?

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  • Last Updated : 28 Dec, 2021

In this article, we are going to see how to make controlling corners opaque of the canvas-like text using FabricJS. The canvas means text written is movable, rotatable, resizable, and can be stretched. But in this article, we will make controlling corners opaque. Further, the text itself cannot be edited like a textbox.
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 which will contain our text. After this, we will initialize instances of Canvas and Text provided by FabricJS and use the transparentCorners property to make controlling corners opaque and render the Canvas on the Text as given in the example below.

 fabric.text(text :string, transparentCorners: boolean); 

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

  • text: It specifies the text.
  • transparentCorners: It specifies whether to keep controlling corners transparent or opaque.

Program: This example uses FabricJS to position relative to top of canvas-like text as given below. 


<!DOCTYPE html>
        How to make controlling corners opaque
        in text canvas using Fabric.js ?
    <!-- Loading the FabricJS library -->
    <script src=
    <canvas id="canvas" width="600" height="200"
        style="border:1px solid #000000;">
        // Create a new instance of Canvas
        var canvas = new fabric.Canvas("canvas");
        // Create a new Text instance
        var text = new fabric.Text('GeeksforGeeks', {
            transparentCorners: false
        // Render the text on Canvas


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