how to lock pdf with password for free
Method #2(Free):Use PDFMate Free PDF Merger to Password Protect Your PDF File. This is actually a PDF merger tool, but it also comes with the option to set a password to the file. The tool comes with both paid and free versions, however, as far as password protection is concerned, you can get that in free version too.
To protect PDF files with a Password, launch Adobe Acrobat and click on âFileâ located at the top left corner of the screen. From the menu click on âOpenâ. Now, choose the PDF file which you would like to Password protect and click on âOpenâ to open the file. You can also open the file directly without launching Adobe Acrobat if you have set Adobe Acrobat as default program for opening PDF files. Again, click on âFileâ and this time choose âPropertiesâ¦â.