For security reasons, often you need to encrypt important PDF. How to encrypt PDF files that do? Foxit PDF Editor has a password encryption and certificate encryption, the following to share with using PDF Editor practice encrypted PDF files.
1. Open the PDF file to be processed in Foxit PDF Editor;
2. Click top left corner of the "File" → "Document Properties" → "Security" and then select "Password protection" to the right of safe drop-down menu;
3, in the pop-up "Password Protection" window, check the "need to enter a password to open the document open," even continue to check the "all documents Permissions" to restrict permission to use this document, you need to pay attention to it is to open password and permissions the password can not be the same as or similar;
4, click "OK", Foxit PDF Editor will prompt what documents you need to save, security settings to take effect, while the rear of the top file name will have a "safe" word, remember to save when you're editing on the line after the set .
When we re-open after the encrypted document will be prompted for a password, just enter the correct password to open the encrypted PDF document.
These are the Foxit PDF Editor PDF file encryption actual operation, we want to help everybody.