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HTML

              
                <div class="avatar-container">
  <div id="avatar" class="avatar"></div>
</div> 
              
            
!

CSS

              
                $avatar-size: 9rem

.avatar-container
  background-color: #bf9de0
  margin-left: -1 * $avatar-size / 2
  margin-top: -1 * $avatar-size / 2
  width: $avatar-size
  height: $avatar-size
  border-radius: 50%
  border: $avatar-size/15 solid #7c5cd1
  position: absolute
  top: 50%
  left: 50%
.avatar
  cursor: pointer
  color: red
  width: $avatar-size
  height: $avatar-size
  border-radius: 50%
  overflow: hidden
  background: url(https://shubox.io/images/avatar.png) center center no-repeat, url(https://shubox.io/images/avatar.png) left 100% no-repeat
  background-size: $avatar-size/2, 100% 0%
  overflow: hidden
  
  img
    width: 100%
    height: 100%
    border-radius: 50%

// loop through each step in the progress percentage
// and update the position of bottom background image.
// 100 % wide, by i % high
@for $i from 1 through 100
  $percentage: 100 / 100 * $i
  .avatar[data-shubox-progress='#{$percentage}']
    background-size: $avatar-size/2, 100% ($percentage * 1%)


              
            
!

JS

              
                new Shubox("#avatar", {
  key: "7e1e4069",
  // image transform queue
  transformName: 'avatar-demo',
  // do not use built-in previewsContainer
  previewsContainer: false,
  // on success - insert the image w/a flip-in
  // animate.css classname
  success: function(file) {
    // create new image element
    let img = new Image();

    // once loaded, insert it inside div#avatar
    img.onload = function() {
      let el = document.getElementById('avatar')
      el.insertAdjacentHTML('beforeend', '<img src="' + file.s3url + '">')
    };

    // assign the src and let it load
    img.src = file.s3url;
  },
  transformCallbacks: {
    // once the 200x200 WEBP is created, and found, replace the image with this one
    "200x200#.webp": function(shuboxFile) {
       console.log(shuboxFile.transforms["200x200#.webp"].s3url)
       document.querySelector("#avatar img").src = shuboxFile.transforms["200x200#.webp"].s3url;
     }
  }
})
              
            
!
999px

Console