You will need
- - computer with Internet access;
- program to unlock pdf files.
Download to your computer a special program in order to extract information from a pdf file. For example, go to the website http://ru.software-free-download.net/archives/1090 and download the program A-Pdf Password Security. This program allows you to remove password from pdf file quickly enough, regardless of the password length. It can also protect your pdf documents. To remove password from a pdf file, click "Free download now". Install the program on your computer, start it. Next, select the option you want to use. To establish password protection or select Single PDF Document Security to remove security and password from the pdf file, select the option Batch PDF Documents Security, then click "Next" (Next).
Click "Add" and select the file from your computer to remove password from pdf, click "Open" (Open). If you have multiple files you want to unblock, then select the folder using the button "Add a directory" Add dir). Click "Next" in the opened window, will be marked, what protection applied to the file. Select the desired option, for example, "Show the password to open the document" and click next. The password will be displayed in the next window.
Download and install PDF Unlocker, you can download it from the site http://www.pdfunlock.com/. Install the program on the comp'lately, run it, select trial mode to run the unlock file in pdf format. In the program window to Select a pdf file click the Browse button and select the file you want to unlock. The program will display the levels of protection for the file. Then select the folder in which to save the document, the resulting unlock. To do this, in the Select Destination click Browse and select the path to the folder. After that press Unlock Pdf button, unlocked file will be saved in the specified folder.