With Filestar you get 1 different skills for working productively with Level III PostScript File (.ps3) files.
About .Ps3
Name
Level III PostScript File
Extension
.ps3
Format
Binary
Category
Raster Image
Developer
Adobe Systems
Description
Level III PostScript Files (PS3) are a type of vector image file format used to store and transfer PostScript language documents. These files are an advanced version of Level II PostScript files and contain text and graphical elements. They can be opened in various vector and graphical editors.