Is there a way to add a one-time password to a Preview PDF? What I need is once the password is entered then the PDF will open all times after that.
MacBook Pro (13-inch, Late 2016, 4 TBT3), macOS High Sierra (10.13.3)
Zip and password protect the zip file. Once they unlock and extract the Zip, the PDF will be unlocked. They would only ever need the password again if they lost the PDF and had to extract it again.
http://osxdaily.com/2012/01/07/set-zip-password-mac-os-x/
I don't think there is any OS that cannot unzip a zip archive.
Zip and password protect the zip file. Once they unlock and extract the Zip, the PDF will be unlocked. They would only ever need the password again if they lost the PDF and had to extract it again.
http://osxdaily.com/2012/01/07/set-zip-password-mac-os-x/
I don't think there is any OS that cannot unzip a zip archive.
If you have an admin account see this article macOS Sierra: administrator , the account will get automatically , protected so no one can steal the data if you create and add data in pdf or do any changes in system see this articles macOS Sierra: Require a password after waking your Mac
And in users and groups automatic login is kept as off see this macOS Sierra: Set up users, guests, and groups on your Mac
After that its up to you to share the account with others see this macOS Sierra: Create a sharing-only user account
There is no provision in Preview to set a one-time password as you describe.
You can set a password, and check the associated box asking that the password be remembered in the key chain. As long as the PDF is in your account, it will not prompt for a password, as this is handled for you with a handshake between Preview and the Key Chain. Anyone else, will always be prompted for the password for each access of the PDF.
Thanks for that answer. I'm selling woodworking project PDF plans and looking for a way to have a buyer download a plan and only be able to open the PDF the first time only if they have the password. I don't want the buyer to have to enter the password everytime they open the PDF. I know that the once opened the PDF can be saved as a non-password protected, but I don't want to have to explain that to a buyer. I think my best other option is to place the PDF in Dropbox and send the Dropbox link to the buyer.
Read this article Lock PDFs and images in Preview on Mac - Apple Support
That protects it all times it's opened. I want it protected the first time it's opened, then not after that.
That is not what I need. I felt my question was clear. Please read it again.
That is not the answer to my question.
or ask adobe who made pdf, it could be their reader has more features then other pdf viewers
That's a great suggestion. I don't like the work involved, but I see many utilities in the app store that do the same thing faster.
Password-protect a Preview PDF one-time
