A PS file is an image saved in the PostScript page description language. It may contain vector graphics, raster graphics, and text. PS files can be printed directly by a PostScript printer (i.e., containing a Raster Image Processor) without being opened in an application.

PS file open in Adobe Photoshop CC 2019 PS files have largely been replaced by other page layout file formats, such as .PDF. Yet, they are still supported by many printers and programs. In general, they can be opened by any printer utility that supports PostScript. You can convert PS files to PDFs using Acrobat Distiller, a program included with Adobe Acrobat, and Apple Preview, a program bundled with macOS. Simply open the file in either of these two programs and the PS file will be automatically converted to a PDF file.