Scanner is an electronic device that functions as a file multiplier or duplicate which will later be converted and stored in digital form. Scanner works by scanning each side of the sheet that you want to scan as a whole. Scan functions as a process of scanning document objects where the file can be in the form of writing, images, or photos. The paper will be detected by the sensor on the scanner machine, then the scanner will convert it in the form of a pdf or jpeg format file.
The benefit of doing a scan is that users can duplicate objects that were originally in the form of hard copies or paper into digital form. This can make it easier for users to save files. In addition, if the physical document or hard copy is lost, the user still has the duplicate file in digital form.

In general, the scan results are saved using the image format (JPEG). But along with the times and technology, now scan results can be saved to various formats needed by users to make it easier to open, organize, edit, and process them on various electronic devices. The current scanned file can be in the form of JPG, JPEG, PNG, to PDF. If you do a scan with a scanner, the user can find the file stored in the My Document folder.
For that, in the PDF Scanner Guide application, it will be explained how to do a scanner on a PC/Laptop, Android or Ios cellphone and on a mac.

Hope it is useful