You can save a PDF file so that it is compatible with older versions of Adobe Acrobat to ensure that users with older versions of the program can view and print the PDF. Note that earlier versions of the program don’t support some features. You can set the PDF compatibility in three ways; you can use the Acrobat Distiller, optimize the PDF in Adobe Acrobat or reduce the file size of the PDF in Adobe Acrobat. Writer Bio
