What is a pdf file?

Pdf means,Portable Document Format

Portable Document Format, standardized as ISO 32000, is a file format developed by Adobe in 1993 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

What does PDF mean and how do I save a file as a PDF?

Essentially, the format is used when you need to save files that cannot be modified but still need to be easily shared and printed.  Today almost everyone has a version of Adobe Reader or other program on their computer that can read a PDF file.

Important:  Once you have saved a document as a PDF file, you cannot convert it back to a Microsoft Office file format without specialized software or a third-party add-in.

What does PDF mean and how do I save a file as a PDF? – Ask NWTC

How To save a file in .pdf format:

1. Open the document you want to save as a .pdf
2. Click the File tab
3. Click Save As (choosing Save As keeps your original version and allows you to save an additional copy in another file format.)
4. In the File Name box, enter a name for the file if you haven’t already
5. Click the drop down arrow in the Save as Type box and click PDF (*.pdf) – If you don’t see this as an option in the menu, make sure you have the free Adobe Reader software installed on your computer. 
6. If you want the file to open in the selected format after saving, select the Open file after publishing check box
7. Click Options box for other available options
8. Click Save

HOW TO MERGE MULTIPLE PDF FILES INTO ONE DOCUMENT

Merge multiple PDF documents, images & files | Adobe Acrobat DC

How to combine and merge your files into one PDF:

Download Adobe acrobat

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1. Open Acrobat DC to combine files:Open the Tools tab and select “Combine files.”
   
2. Add files: Click “Add Files” and select the files you want to include in your PDF. You can merge PDFs or a mix of PDF documents and other files.
   
3. Arrange and delete content: Click, drag, and drop to reorder files or press “Delete” to remove any content you don’t want.
   
4. Combine files: When you’re finished arranging, click “Combine Files”.
   
5. Save as a PDF file: Name your file and click the “Save” button. That’s it.