Grey scale image

The simplest way is to use grayscale CSS filter.

  1. In page’s Page HTML Header add style rule with id selector, let it be grayscale, to be applied to nested <img> element.
    image

  2. Set ID attribute of your Image element to grayscale.
    image

If you don’t see ID attribute on Image element, unhide it in Settings of your app as described here: How do you enable an ID attribute to a input box or any item - Need help - Bubble Forum.

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