PDF files are certainly secure and the safest way to distribute data online.
This is so because PDFs have the ability to contain security and encryption using passwords or using certificates.
Other tools call it PDF Password or Encryption – no matter what it’s called, it’s simply protecting your PDF. This is simply done by adding an owner’s password or an open password to the file. The difference between the two comes down to its function. Open passwords are those that are required before the reader gets to view the data. While this will keep unwanted eyes, this type of password would still allow the authorized reader to print, copy, or highlight the contents of the document. The owner’s password, on the other hand, doesn’t require a password upon opening the PDF but will be required once the reader tries to do something with the file. Modifications of the owner’s password can depend on the author’s preference and can be set only on those actions deemed necessary. For instance, if the author only wants to restrict printing and copying of data, then a password may be required for printing and copying but not when readers try to modify, fill out forms, annotate or comment, insert, delete, and rotate pages.
If You Don’t Want Passwords
Adding encryption may be great but it doesn’t quite fit the online market. If you want this file to be available to everyone online but need it to copy proof, then another method can be used. This is technique is done by turning your machine-readable file into an image-only PDF file.
An image-only PDF file is defined as the scanned or the photographed image of your file’s content. It does not have a text layer and therefore cannot be searched, copied, modified or marked-up like your normal PDF. Normally, we get these types of PDFs when we scan a document or when we convert images into PDF.