You can export the screens in your project as individual images (JPG or PNG).
To do so, click on 'Export' on the upper right-hand side.
You will then have the option to choose which file format you'd like to export your project into. Choose JPG or PNG.
You will also have the option to choose whether you'd like to export the entire project as an image or the individual screens as images. Choose 'Export individual screens.'
Your project will then be exported in your chosen file format with each of the screens as a separate image.