How to add a password to a PDF?

Do you want to protect a PDF file with a password? Now, we will show you step by step how you can do it very easily, for free, and without downloading any software.

There are many reasons why you might need to protect a PDF file with a password. The most important reason is to prevent others from seeing sensitive data and ensure that only the intended recipient can access it. Examples include contracts, medical documents, bank statements, and invoices. This way, if you send a PDF via email, only the intended person will be able to view the information.

Now, we will show you how you can do this yourself very easily.

How to add password to PDF?

The PdfMasterTools Password Protect PDF tool is one of the fastest and most efficient options. The service is completely free, with no restrictions or limitations on its usage.

As the first step, visit pdfmastertools.com, then select the Password Protect PDF tool from the available options.

Next, click the Select File button and choose the PDF file you want to protect with a password. If you prefer, you can also use the Drag & Drop option—simply drag your file into the web application.

After uploading, you need to set a password for the PDF file. It is very important to remember this password because if the original PDF file is lost, you will not be able to open the document, as it will be password-protected.

The PdfMasterTools password protection has no restrictions on password complexity, but it is recommended to use a secure password—one that includes a combination of lowercase letters, uppercase letters, numbers, and special characters.

Enter the password, re-enter it for confirmation, and then click the Encrypt PDF file button.

After that, the conversion will be completed within a few seconds, and the newly password-protected PDF file will be available for download. The downloaded file can only be opened with the correct password—no matter which program is used, if the password is not known, the file cannot be accessed.

Use the PdfMasterTools Password Protect PDF tool for free, with no restrictions, online.