A PDF author or owner can put different restrictions on his/her PDF file. So, depending on the restrictions enabled on PDF, you won’t be able to copy the content of PDF document, open PDF without the ...

There are times when a PDF truly needs encryption—for instance, if it contains sensitive information and someone just emailed it to you (let’s hope they used another communications method to send you ...

PDF is the most commonly used document format currently. Adobe launched the format to store all your documents in one file, thus naming it Portable Document Format. Since then, it has been used ...