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So you're adding content that you create into your PDF you also need a word processor, such as Microsoft Word, or Google Docs. The files you wish to compile into a single PDF might be generated with various apps, such as AutoCAD, Excel, Google Drawings, or Canva, and they might be in formats such as .xlsx, .jpg, or Google Slides. And you may include files that are in PDF format already, within your bigger PDF. These may be files that were always digital, having been saved as PDFs in creation software (such as Word or Google Docs.) Or , they can be scans of paper documents, that are essentially images saved in PDF format. Adobe Acrobat can combine all of these into a single, navigable PDF document readable by anyone with a PDF reader application.
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