UserGuiding lets you choose your own Launcher Image to make your onboarding material more like a native UI element on your application's interface.
To do that:
Access the Checklists page.
Create a new checklist or edit an existing one.
Access the Customize tab.
Find the Launcher section, and there you will able to edit the launcher icon. You can also combine your icon with text.
You can use a .jpeg or a .png file for the launcher image.
While applying an Image, do not forget that it is going to be rounded. So try to apply inside paddings for the logo within the image.
In the example above, let's suppose you are working on a 100px x 100px file.
Try to apply at least 20px of inside margins from all sides to ensure your logo will be displayed properly.