PDF Password Protection

[Willbert]

Is there any way of removing this once you’ve opened the document without paying large amounts of money to Adobe for Acrobat?

 

[twerppoet]

I played with the two apps I have.

Preview (Apple's PDF app) will let you lock a PDF, but I found no way to unlock/remove the password.

Documents by Readdle will let me both add and remove a password from a document, but I've only tried with a document I created. I don't know if it would work with a document created and locked by another user.

PDF Expert, also by Readdle should do the same thing.

 

[KevinJS]

Using MacOS, I was able to remove the password from a PDF that was created by a third party.

Open the PDF in Preview and supply the password. Then save it to the desktop, unchecking the "Save as JPG" box.
Then send it to your intended recipient. I sent mine to my wife, who was able to open the file on her Android phone without a password.

Repeating the exercise using iOS resulted in the password not being removed, so I guess the answer is to decide whether Apple or Adobe gets your money, if you don't already have a computer.

 

[Willbert]

I believe there are a couple of ways it can be done on a Mac but I’ve not tried it yet.

 

[Willbert]

I've just opened the file on my iMac, Export didn't work. In fact I couldn't open the exported copy even with the password.

Next I tried, File, Print, PDF, Save as PDF... and that worked just fine.

Its just a shame I have to resort to using my iMac.