Why is my canvas.toDataURL() not saving my image?

Resolving Image Saving Issues with canvas.toDataURL()

When attempting to utilize canvas.toDataURL() to save a canvas as an image , you may encounter difficulties. Here's how to approach the situation:

Problems and Solutions

Problems:

The following is the code for saving the canvas image but it doesn't work:

// Canvas named "canvasSignature"

JavaScript:

function putImage() {
  var canvas1 = document.getElementById("canvasSignature");
  if (canvas1.getContext) {
    var ctx = canvas1.getContext("2d");
    var myImage = canvas1.toDataURL("image/png");
  }
  var imageElement = document.getElementById("MyPix");
  imageElement.src = myImage;
}

HTML5:

<div id="createPNGButton">
  <button onclick="putImage()">Save as Image</button>
</div>

Solution:

The step to convert the image to binary stream is missing in the code . Modify the code to:

var image = canvas.toDataURL("image/png").replace("image/png", "image/octet-stream");

window.location.href = image; // Save locally

The code can save the image locally by converting it to a binary stream and treating it as a file.

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