PDF is a file format that makes your document easy to view and exchange outside of InDesign. The PDF looks just like your InDesign document, and anyone with a free PDF reader can view it:
Choose File > Export.
In the Export dialog box, change the name of the file, choose Adobe PDF (Print) for the format. The Adobe PDF (Interactive) format is for saving a PDF with interactivity added in InDesign, like links, buttons, video, and more.
Click Save.
In the Export Adobe PDF dialog box, set any options, then click Export to output the PDF.