Adobe Systems invented the Portable Document Format as a variation on its PostScript page definition language, making it possible for content creators to share complex graphical documents with people who lacked access to the creation software and resources used in the original file. As a format that emphasizes sharing and portability, PDF deliberately lacks support for in-depth editability because it’s intended as a viewing medium. When you export PDFs from Adobe InDesign, however, you can add or preserve some forms of editability. Writer Bio
