Sometimes we want to protect PDF documents quickly with the password. A lot of tools can do that but it asks you to pay money for license. Also it can come with spyware or malware but we can simply do it with this one website here.
PROTECT PDF FILE WITH PASSWORD HERE
DRAG AND DROP FILE INTO THE WEBSITE
Enter your new password and protect it with 128-Bit AES encryption
Now you can download your protect file [Alternatively you can use offline software PDFENCRYPT