Files with .qxp extension are Layout Files categorized as QuarkXPress project files. The .qxp file type replaces older .qxd files used in QuarkXPress versions 5 and earlier. When working in QuarkXPress, save designs as .qxp projects for further editing. To create a .qxp file, select File -> New -> Project, set options, click OK, then File -> Save. Open .qxp files with QuarkXPress on Windows and Mac. Introduced in QuarkXPress version 6. Supported by Mac and Windows software. Markzware extensions allow .qxp support in InDesign. View, edit, convert, merge, split, compare .qxp files with free online apps without installing anything.