Work, hate people turn on my computer files peep, hum! All of a sudden it was discovered the secret, one hundred do not want to!
Although safe PDF document itself can not easily be edited, but in the course of some of the content or do not want others to see, just want to share PDF documents to a specific person, this time you need to encrypt a PDF document, then the how PDF encryption to protect it?
Lightning PDF Editor is a powerful and professional editing tools help us easily complete PDF editing, reading, annotation, add an action image, merge documents, etc., to give us a new office experience, did not talk much, below a brief introduction at specific steps, hope you like it.
Step one, first of all searches on any browser "Lightning PDF Editor", find the official website with a click into, and then choose to download the site home page, and finally installed on the computer. Download: https: //bianji.sdpdf.net/
Step two, Chenghua after installing lightning PDF Editor opens, click "Open" - "Browse" and select the PDF document editing we need to according to the guidelines.
Step three, open a document, select "Protect" and then choose "security policy" in the document security in the toolbar.
Step four, choose to jump out of the page "New" - "secure password."
Step five, where we can set a password to open and password to modify the document and printing a document.
Step six, you can also set specific permissions, after click "OK."
Step seven, and then customize the key name.
The eighth step, select and set a good password select "Apply to the document."
The first long step, click on the document security page "Yes" button.
The tenth step, after the document is saved, the password can be set to take effect.
Tenth step, after you save the document, click again to open, then you need a password.
The twelfth step, enter the password to open the document will find many features are light-colored, simply can not use, because in the above steps, we have set specific permissions. So you can set a password and privileges according to their needs.