What’s the difference between user password and owner password?
A PDF file may be encrypted for security, or digitally signed for authentication. The standard security provided by Acrobat PDF consists of two different methods...
Knowledge Base to VeryPDF Products
A PDF file may be encrypted for security, or digitally signed for authentication. The standard security provided by Acrobat PDF consists of two different methods...
When you use the some note icon to comment your PDF document, you may want to use some kind of interesting icon such as an...
There are a variety of comment formats in PDF document, for example, note comment, text box comment, stamp comment, draw comment, etc. If you use...
When you need to browse your PDF document, you will need a PDF reader which can open, browse, zoom, etc. your document. So you can...
PDF document is a kind of excellent file which is able to protect your contents in the document from being optionally printed, copied, modified, etc....