Override the image file format for layers in your HTML exports

If you would like to override the image file format for any layer in your timeline, you can optionally do this for any layer by clicking any layer's Settings icon button in the main timeline to open the layer settings, and selecting an option from the Optionally override the image format for this layer in banner exports dropdown select list:

Auto-detect optimal format (Default)
Export layer as JPG (.jpg)
Export layer as PNG (.png)
Export layer as SVG (.svg)

This will ensure that your layer will always be exported to the image format you've selected when they're exported to HTML from the Bannerify plugin.