crowd-fab - Amazon SageMaker


A floating button with an image in its center.

See an interactive example of an HTML template that uses this Crowd HTML Element in CodePen.

The following is an example of a Liquid template designed for image classification that uses the <crowd-fab> element. This template uses JavaScript to enable workers to report issues with the worker UI. Copy the following code and save it in a file with the extension .html. Open the file in any browser to preview and interact with this template.

<script src=""></script> <crowd-form> <crowd-image-classifier src="${image_url}" categories="['Cat', 'Dog', 'Bird', 'None of the Above']" header="Choose the correct category for the image" name="category"> <short-instructions> <p>Read the task carefully and inspect the image.</p> <p>Choose the appropriate label that best suits the image.</p> <p>If there is an issue with the image or tools, please select <b>None of the Above</b>, describe the issue in the text box and click the button below.</p> <crowd-input label="Report an Issue" name="template-issues"></crowd-input> <crowd-fab id="button1" icon="report-problem" title="Issue"/> </short-instructions> <full-instructions header="Classification Instructions"> <p>Read the task carefully and inspect the image.</p> <p>Choose the appropriate label that best suits the image. Use the <b>None of the Above</b> option if none of the other labels suit the image.</p> </full-instructions> </crowd-image-classifier> </crowd-form> <script> [ button1, ].forEach(function(button) { button.addEventListener('click', function() { document.querySelector('crowd-form').submit(); }); }); </script>


The following attributes are supported by this element.


A Boolean switch that, if present, displays the floating button as disabled and prevents clicks.


A string that specifies the icon to be displayed in the center of the button. The string must be either the name of an icon from the open-source iron-icons set, which is pre-loaded, or the URL to a custom icon.

The following is an example of the syntax that you can use to add an iron-icon to a <crowd-fab> HTML element. Replace icon-name with the name of the icon you'd like to use from this Icons set.

<crowd-fab "id="button1" icon="icon-name" title="Issue"/>


A string consisting of a single character that can be used instead of an icon. Emojis or multiple characters may result in the button displaying an ellipsis instead.


A string that will display as a tool tip when the mouse hovers over the button.

Element Hierarchy

This element has the following parent and child elements.

  • Parent elements: crowd-form

  • Child elements: none

See Also

For more information, see the following.