If you are using any multimedia format in your intro slide in Storyline, the default starting screen will be a blank screen with the play button, we can customize the first image to be our course thumbnail.

This is how it´s done:

In the player properties window, check the Cover Photo box and click the + Photo link to browse for an image.

You have four different options to choose from.

1. First slide: Choose this option if the first screen in your course is static and works well as an introduction.
2. Media library: Select this option if you want to use an image that’s already in your course.
3. Content Library 360: If you want to use a brand-new photo or illustration, browse the huge library of images included with your Articulate 360 subscription.
4. Image from file: If you’ve created a custom image, just upload the file from your computer.

In this short video you can see the