Password protection of your PDF file ensures that the PDF can only be opened by the intended recipient of the file. Password protection can also be used to prevent users from printing or editing the document. These settings can be further tweaked to allow only low resolution printing, and varying degrees of editing.
To password protect your PDF document in Adobe Acrobat Reader,
- Go to Advanced > Security > Encrypt With Password.
- A prompt will appear asking if you are sure you want to change the security settings.
- Click on Yes.
- Select Encrypt all document contents, check Require password to open document, and enter the password in the “document open password” field.
- If you want control on the permissions to print and edit the document, check Restrict editing and printing.
- Provide the password for changing these settings.
- Make sure Enable copying of text, images, and other content is unchecked.
- Click on OK.
A prompt will appear asking you to confirm the passwords you have entered. Another prompt states clearly that not all third-party programs respect the security settings in the PDF file. In this way you can lock or password protect your PDF file to ensure security and prevent unauthorized editing.
Also check out our article on how to crack or remove this security of PDF files or documents using third party software..
How to Unlock PDF Files Easily for Free
Nice post, but utterly BS and misleading.
such bad advice …misleading people like this you should be ashamed
You can use Winsesame downloadable at http://www.winsesame.com. It work with all files and folders. There is a free limited version but it’s enought for the average size of pdf documents.
Sergio.
OK it works.
Tanks.
Yes this works also with all sort of files. Good tip.
i think that this method requires the registered version of acrobat…
Please can someone tell me how to password protect a document in Adobe Reader 9 as i can’t find the advanced tab and when i go to go to Document -> Security -> Show Security Properties, i can’t do anything there either. Please Help
I am not able to get this option in Acrobat reader 9
I didn’t find any Advance option in Acrobat reader 9. Can you help me please?
I’m using Acrobat reader 8, and I don’t have an advanced option either. I can go to Document -> Security -> Show Security Properties -> Advanced tab. Yet, once I get there, there’s nothing I can do about changing the settings. Help?
i could not locate advanced either, where is it?
I didn’t find any Advance option in Acrobat reader 9. Can you help me please?
Thanks for sharing with us .very informative and interesting …keep posting 😀
how to open PDF file protected by password?
how to obtain the correct password like ‘a case of forgeting password’?
You can’t obtain password but you can crack it which I’ve explained in this post..
http://pcsplace.com/tips-n-tricks/unlock-pdf-files-easily-for-free/