How to remove password protect from pdf

I have a password protected pdf doc,it is very useful for protecting.But here is a problem puzzle me for long time.
Here is the pro:I can’t print, copy or edit the content of an encrypted PDF file.
Any help???

IF you could, then there wouldn't be any value to password-protecting it, now would there?

As far as I know, you have to decrypt it before you can see the contents.

did you originally encrypt the document
most encrypted PDF have 2 passwords A read only password that is given to anyone needing to open & read it & a master password that allows editing/printing etc
What's more, i share you a article about How to remove PDF password and restriction,which has made the whole process easy.
It saved me lots of time on this. I just shared the guide with you.
Hope it can do you a bit favor.

1. Open the tool.

2. To remove the restriction click on Add files button given at the top. You can add up to 200 PDF files for one batch processing.

3. After adding files click Start button. It will process all your files and remove restrictions one by one.