Re-export the exported format and select the PDF format. In general, Safari or preview programs can be opened directly or exported to word format. The Mac computer system comes with a pages program. You can open a file in this format, click the file, right-click and select pages program to open it.

PDF is a file format developed by AdobeSystems in 1993 for file exchange. PDF is mainly composed of three technologies: it is derived from PostScript; Font embedding system; Data compression and transmission system. Its advantages are cross-platform, maintaining the original file format and open standards, freely developing PDF-compatible software and royalty-free. This is an open standard, and it became the ISO32000 international standard in June 2007.