Social graphics created by Igniter Media include Photoshop files so you can edit and customize the files as needed. The Photoshop files for social graphics include the portrait, landscape and square versions of the graphics.
Once you make any changes needed and are ready to export the images, you can click File/Export/Artboards to Files and it will allow you to export all of the images included in the PSD separately, and as JPGs if so desired.
Social Graphic Photoshop File
How To Export The Files Separately