How to Convert an Image URL to Base64 in Javascript?

How to Convert Image URL to Base64

You're given an image URL from an image input and need to convert it to Base64 so you can send it to a web service and save the image locally. The current code you're using doesn't convert the URL to Base64.

To achieve this, you can use the following steps:

1. Create a JavaScript function to convert the image to Base64:

<code class="javascript">function getBase64Image(img) {
  var canvas = document.createElement("canvas");
  canvas.width = img.width;
  canvas.height = img.height;
  var ctx = canvas.getContext("2d");
  ctx.drawImage(img, 0, 0);
  var dataURL = canvas.toDataURL("image/png");
  return dataURL.replace(/^data:image\/?[A-z]*;base64,/);
}</code>

This function takes an image element (img) as input and returns a Base64-encoded string.

2. Get the image element from your HTML:

<code class="html"><img id="imageid" src="https://www.google.de/images/srpr/logo11w.png"></code>

3. Use the getBase64Image() function to convert the image to Base64:

<code class="javascript">var base64 = getBase64Image(document.getElementById("imageid"));</code>

This will convert the image to Base64 and store the result in the base64 variable. You can then send the base64 variable to your web service to save the image locally.

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