title: Cloudinary - add overlay text to thumbnailTransformation in image upload widget
body: <p>I am using the upload image widget and I want to add a text overlay but don't know how, can someone answer me?</p>
  
  <pre><code>thumbnailTransformation: [{ width: 300, height: 300, crop: 'fill', border: "2px_solid_red" }],
  </code></pre>