You can promote your Onepager using a Ebook Cover Graphic which will generate an image you can use on social media, your website or anywhere you'd like.
You can find the Share & Embed option on any Onepager.
You can change a the Theme on the fly to change the design quickly. You can also make any changes to the Title, Author, Logo, Background and even adjust the Grid style. These changes will not affect the live Onepager. These changes are purely cosmetic.

Once you are ready to generate your ebook graphic you can click the "Download Graphic" button which will create a unique graphic that you can download and use any where you want.