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Old Jul 12, 2013, 07:20 AM   #1
MacNoobGuy
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How to lock a pdf file so it can't be edited?

hey guys, i'm using 'Preview' at the moment. i've got a very important work related document that i've exported from OpenOffice and into a pdf file. so it started out as a .doc file in OpenOffice and now it's a .pdf file. i just want to make it so i can't make any further changes to it.

any help would be really great!
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Old Jul 12, 2013, 10:10 AM   #2
firedept
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Quote:
Originally Posted by MacNoobGuy View Post
hey guys, i'm using 'Preview' at the moment. i've got a very important work related document that i've exported from OpenOffice and into a pdf file. so it started out as a .doc file in OpenOffice and now it's a .pdf file. i just want to make it so i can't make any further changes to it.

any help would be really great!
Open in Preview, Click on File>Print. Bottom left corner of dialogue box click PDF. Click on Save As PDF... and then on Security Options in new dialogue box. You will the get a dialogue box that will offer you security options.
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Old Jul 13, 2013, 12:43 PM   #3
pdjudd
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If you want really good PDF security options, you pretty much are going to want to use Acrobat pro or PDF Pen Pro. I don't know if they can restrict more than what Preview does, but it is probably more native.
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Old Jul 15, 2013, 05:15 AM   #4
benwiggy
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If you just want to prevent Preview from making edits to the file, you can always lock the file in the Finder to stop it being over-written.

Preview uses the same security that Acrobat does: it's the PDF standard for security. However, Acrobat will have greater ability to configure and control that security.

It's worth mentioning that there are programs on the internet to strip the security from PDFs, so technically: if someone does want to copy, print or modify the contents, you can't stop them.
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Old Jul 15, 2013, 08:17 AM   #5
960design
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After converting a document to a .pdf you will not easily be able ( accidentally ) change it. Changing the text of a PDF requires several button clicks and 'Pro' software to do it.

As others have said, if you are looking to ensure the document CANNOT ever be changed by someone, that is impossible. You can only make it MORE difficult to change it.
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Old Jul 15, 2013, 11:02 AM   #6
jdechko
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Quote:
Originally Posted by benwiggy View Post
If you just want to prevent Preview from making edits to the file, you can always lock the file in the Finder to stop it being over-written.
Agreed. Simple and effective.
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